deps: update v8 to 4.4.63.9

Upgrade the bundled V8 and update code in src/ and lib/ to the new API.

Notable backwards incompatible changes are the removal of the smalloc
module and dropped support for CESU-8 decoding.  CESU-8 support can be
brought back if necessary by doing UTF-8 decoding ourselves.

This commit includes https://codereview.chromium.org/1192973004 to fix
a build error on python 2.6 systems.  The original commit log follows:

    Use optparse in js2c.py for python compatibility

    Without this change, V8 won't build on RHEL/CentOS 6 because the
    distro python is too old to know about the argparse module.

PR-URL: https://github.com/nodejs/io.js/pull/2022
Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>

33 files changed, 1649 insertions, 294 deletions

diff --git a/deps/v8/test/webkit/class-constructor-return-expected.txt b/deps/v8/test/webkit/class-constructor-return-expected.txt
new file mode 100644
index 0000000000..36062f040d
--- /dev/null
+++ b/deps/v8/test/webkit/class-constructor-return-expected.txt
@@ -0,0 +1,94 @@
+Tests for ES6 class constructor return values
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+Base class
+PASS (new BaseNoReturn) instanceof BaseNoReturn is true
+PASS (new BaseReturnImplicit) instanceof BaseReturnImplicit is true
+PASS (new BaseReturnImplicit) !== undefined is true
+PASS (new BaseReturnUndefined) instanceof BaseReturnUndefined is true
+PASS (new BaseReturnUndefined) !== undefined is true
+PASS (new BaseReturnThis) instanceof BaseReturnThis is true
+PASS (new BaseReturnObject) instanceof BaseReturnObject is false
+PASS typeof (new BaseReturnObject) === "object" is true
+PASS (new BaseReturnObject2) instanceof BaseReturnObject is false
+PASS (new BaseReturnObject2) === globalVariable is true
+PASS (new BaseReturnString) instanceof BaseReturnString is true
+PASS typeof (new BaseReturnString) !== "string" is true
+PASS (new BaseReturnNumber) instanceof BaseReturnNumber is true
+PASS typeof (new BaseReturnNumber) !== "number" is true
+PASS (new BaseReturnNull) instanceof BaseReturnNull is true
+PASS (new BaseReturnNull) !== null is true
+PASS (new BaseReturnSymbol) instanceof BaseReturnSymbol is true
+PASS (new BaseReturnSymbol) !== globalSymbol is true
+PASS (new BaseThrow) threw exception Thrown Exception String.
+
+Function constructor (non-class)
+PASS (new FunctionNoReturn) instanceof FunctionNoReturn is true
+PASS (new FunctionReturnImplicit) instanceof FunctionReturnImplicit is true
+PASS (new FunctionReturnImplicit) !== undefined is true
+PASS (new FunctionReturnUndefined) instanceof FunctionReturnUndefined is true
+PASS (new FunctionReturnUndefined) !== undefined is true
+PASS (new FunctionReturnThis) instanceof FunctionReturnThis is true
+PASS (new FunctionReturnObject) instanceof FunctionReturnObject is false
+PASS typeof (new FunctionReturnObject) === "object" is true
+PASS (new FunctionReturnObject2) instanceof FunctionReturnObject is false
+PASS (new FunctionReturnObject2) === globalVariable is true
+PASS (new FunctionReturnString) instanceof FunctionReturnString is true
+PASS typeof (new FunctionReturnString) !== "string" is true
+PASS (new FunctionReturnNumber) instanceof FunctionReturnNumber is true
+PASS typeof (new FunctionReturnNumber) !== "number" is true
+PASS (new FunctionReturnNull) instanceof FunctionReturnNull is true
+PASS (new FunctionReturnNull) !== null is true
+PASS (new FunctionReturnSymbol) instanceof FunctionReturnSymbol is true
+PASS (new FunctionReturnSymbol) !== globalSymbol is true
+PASS (new FunctionThrow) threw exception Thrown Exception String.
+
+Derived class calling super()
+PASS (new DerivedNoReturn) instanceof DerivedNoReturn is true
+PASS (new DerivedReturnImplicit) instanceof DerivedReturnImplicit is true
+PASS (new DerivedReturnImplicit) !== undefined is true
+PASS (new DerivedReturnUndefined) instanceof DerivedReturnUndefined is true
+PASS (new DerivedReturnUndefined) !== undefined is true
+PASS (new DerivedReturnThis) instanceof DerivedReturnThis is true
+PASS (new DerivedReturnObject) instanceof DerivedReturnObject is false
+PASS typeof (new DerivedReturnObject) === "object" is true
+PASS (new DerivedReturnObject2) instanceof DerivedReturnObject2 is false
+PASS (new DerivedReturnObject2) === globalVariable is true
+PASS (new DerivedReturnString) threw exception TypeError: Derived constructors may only return object or undefined.
+PASS (new DerivedReturnNumber) threw exception TypeError: Derived constructors may only return object or undefined.
+PASS (new DerivedReturnNull) threw exception TypeError: Derived constructors may only return object or undefined.
+PASS (new DerivedReturnSymbol) threw exception TypeError: Derived constructors may only return object or undefined.
+PASS (new DerivedThrow) threw exception Thrown Exception String.
+
+Derived class not calling super()
+PASS (new DerivedNoSuperNoReturn) threw exception ReferenceError: this is not defined.
+PASS (new DerivedNoSuperReturnImplicit) threw exception ReferenceError: DerivedNoSuperReturnImplicit is not defined.
+PASS (new DerivedNoSuperReturnUndefined) threw exception ReferenceError: this is not defined.
+PASS (new DerivedNoSuperReturnThis) threw exception ReferenceError: this is not defined.
+PASS (new DerivedNoSuperReturnObject) did not throw exception.
+PASS (new DerivedNoSuperReturnObject2) did not throw exception.
+PASS (new DerivedNoSuperReturnString) threw exception TypeError: Derived constructors may only return object or undefined.
+PASS (new DerivedNoSuperReturnNumber) threw exception TypeError: Derived constructors may only return object or undefined.
+PASS (new DerivedNoSuperReturnNull) threw exception TypeError: Derived constructors may only return object or undefined.
+PASS (new DerivedNoSuperReturnSymbol) threw exception TypeError: Derived constructors may only return object or undefined.
+PASS (new DerivedNoSuperThrow) threw exception Thrown Exception String.
+
+Derived class with default constructor and base class returning different values
+PASS (new DerivedDefaultConstructorWithBaseNoReturn) instanceof DerivedDefaultConstructorWithBaseNoReturn is true
+PASS (new DerivedDefaultConstructorWithBaseReturnImplicit) instanceof DerivedDefaultConstructorWithBaseReturnImplicit is true
+PASS (new DerivedDefaultConstructorWithBaseReturnUndefined) instanceof DerivedDefaultConstructorWithBaseReturnUndefined is true
+PASS (new DerivedDefaultConstructorWithBaseReturnObject) instanceof DerivedDefaultConstructorWithBaseReturnObject is false
+PASS typeof (new DerivedDefaultConstructorWithBaseReturnObject) === "object" is true
+PASS (new DerivedDefaultConstructorWithBaseReturnObject2) instanceof DerivedDefaultConstructorWithBaseReturnObject2 is false
+PASS (new DerivedDefaultConstructorWithBaseReturnObject2) === globalVariable is true
+PASS (new DerivedDefaultConstructorWithBaseReturnThis) instanceof DerivedDefaultConstructorWithBaseReturnThis is true
+PASS (new DerivedDefaultConstructorWithBaseReturnString) instanceof DerivedDefaultConstructorWithBaseReturnString is true
+PASS (new DerivedDefaultConstructorWithBaseReturnNumber) instanceof DerivedDefaultConstructorWithBaseReturnNumber is true
+PASS (new DerivedDefaultConstructorWithBaseReturnNull) instanceof DerivedDefaultConstructorWithBaseReturnNull is true
+PASS (new DerivedDefaultConstructorWithBaseReturnSymbol) instanceof DerivedDefaultConstructorWithBaseReturnSymbol is true
+PASS (new DerivedDefaultConstructorWithBaseThrow) threw exception Thrown Exception String.
+PASS successfullyParsed is true
+
+TEST COMPLETE
diff --git a/deps/v8/test/webkit/class-constructor-return.js b/deps/v8/test/webkit/class-constructor-return.js
new file mode 100644
index 0000000000..6eb72ad403
--- /dev/null
+++ b/deps/v8/test/webkit/class-constructor-return.js
@@ -0,0 +1,217 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-sloppy
+
+description('Tests for ES6 class constructor return values');
+
+// ES6
+// - 9.2.2 [[Construct]] (ECMAScript Function Objects)
+// - 12.3.5.1 Runtime Semantics: Evaluation (The super Keyword)
+// - 14.5.14 Runtime Semantics: ClassDefinitionEvaluation (Default Constructor)
+
+var globalVariable = {name:"globalVariable"};
+var globalSymbol = Symbol();
+
+debug('Base class');
+class BaseNoReturn { constructor() { } };
+class BaseReturnImplicit { constructor() { return; } };
+class BaseReturnUndefined { constructor() { return undefined; } };
+class BaseReturnThis { constructor() { return this; } };
+class BaseReturnObject { constructor() { return {a:1}; } };
+class BaseReturnObject2 { constructor() { return globalVariable; } };
+class BaseReturnString { constructor() { return "test"; } };
+class BaseReturnNumber { constructor() { return 1; } };
+class BaseReturnNull { constructor() { return null; } };
+class BaseReturnSymbol { constructor() { return Symbol(); } };
+class BaseThrow { constructor() { throw "Thrown Exception String"; } };
+
+// Base - Implicit => return this.
+shouldBeTrue('(new BaseNoReturn) instanceof BaseNoReturn');
+
+// Base - Early return => return this.
+shouldBeTrue('(new BaseReturnImplicit) instanceof BaseReturnImplicit');
+shouldBeTrue('(new BaseReturnImplicit) !== undefined');
+shouldBeTrue('(new BaseReturnUndefined) instanceof BaseReturnUndefined');
+shouldBeTrue('(new BaseReturnUndefined) !== undefined');
+
+// Base - return this => return this.
+shouldBeTrue('(new BaseReturnThis) instanceof BaseReturnThis');
+
+// Base - return Object => return object, not instance.
+shouldBeFalse('(new BaseReturnObject) instanceof BaseReturnObject');
+shouldBeTrue('typeof (new BaseReturnObject) === "object"');
+shouldBeFalse('(new BaseReturnObject2) instanceof BaseReturnObject');
+shouldBeTrue('(new BaseReturnObject2) === globalVariable');
+
+// Base - return non-Object => return this.
+shouldBeTrue('(new BaseReturnString) instanceof BaseReturnString');
+shouldBeTrue('typeof (new BaseReturnString) !== "string"');
+shouldBeTrue('(new BaseReturnNumber) instanceof BaseReturnNumber');
+shouldBeTrue('typeof (new BaseReturnNumber) !== "number"');
+shouldBeTrue('(new BaseReturnNull) instanceof BaseReturnNull');
+shouldBeTrue('(new BaseReturnNull) !== null');
+shouldBeTrue('(new BaseReturnSymbol) instanceof BaseReturnSymbol');
+shouldBeTrue('(new BaseReturnSymbol) !== globalSymbol');
+
+// Base - throw => throw
+shouldThrow('(new BaseThrow)');
+
+// Same behavior for Functions.
+debug(''); debug('Function constructor (non-class)');
+function FunctionNoReturn() { };
+function FunctionReturnImplicit() { return; };
+function FunctionReturnUndefined() { return undefined; };
+function FunctionReturnThis() { return this; };
+function FunctionReturnObject() { return {a:1}; };
+function FunctionReturnObject2() { return globalVariable; };
+function FunctionReturnString() { return "test"; };
+function FunctionReturnNumber() { return 1; };
+function FunctionReturnNull() { return null; };
+function FunctionReturnSymbol() { return Symbol(); };
+function FunctionThrow() { throw "Thrown Exception String"; };
+
+shouldBeTrue('(new FunctionNoReturn) instanceof FunctionNoReturn');
+shouldBeTrue('(new FunctionReturnImplicit) instanceof FunctionReturnImplicit');
+shouldBeTrue('(new FunctionReturnImplicit) !== undefined');
+shouldBeTrue('(new FunctionReturnUndefined) instanceof FunctionReturnUndefined');
+shouldBeTrue('(new FunctionReturnUndefined) !== undefined');
+shouldBeTrue('(new FunctionReturnThis) instanceof FunctionReturnThis');
+shouldBeFalse('(new FunctionReturnObject) instanceof FunctionReturnObject');
+shouldBeTrue('typeof (new FunctionReturnObject) === "object"');
+shouldBeFalse('(new FunctionReturnObject2) instanceof FunctionReturnObject');
+shouldBeTrue('(new FunctionReturnObject2) === globalVariable');
+shouldBeTrue('(new FunctionReturnString) instanceof FunctionReturnString');
+shouldBeTrue('typeof (new FunctionReturnString) !== "string"');
+shouldBeTrue('(new FunctionReturnNumber) instanceof FunctionReturnNumber');
+shouldBeTrue('typeof (new FunctionReturnNumber) !== "number"');
+shouldBeTrue('(new FunctionReturnNull) instanceof FunctionReturnNull');
+shouldBeTrue('(new FunctionReturnNull) !== null');
+shouldBeTrue('(new FunctionReturnSymbol) instanceof FunctionReturnSymbol');
+shouldBeTrue('(new FunctionReturnSymbol) !== globalSymbol');
+shouldThrow('(new FunctionThrow)');
+
+
+debug(''); debug('Derived class calling super()');
+class DerivedNoReturn extends BaseNoReturn { constructor() { super(); } };
+class DerivedReturnImplicit extends BaseNoReturn { constructor() { super(); return; } };
+class DerivedReturnUndefined extends BaseNoReturn { constructor() { super(); return undefined; } };
+class DerivedReturnThis extends BaseNoReturn { constructor() { super(); return this; } };
+class DerivedReturnObject extends BaseNoReturn { constructor() { super(); return {a:1}; } };
+class DerivedReturnObject2 extends BaseNoReturn { constructor() { super(); return globalVariable; } };
+class DerivedReturnString extends BaseNoReturn { constructor() { super(); return "test"; } };
+class DerivedReturnNumber extends BaseNoReturn { constructor() { super(); return 1; } };
+class DerivedReturnNull extends BaseNoReturn { constructor() { super(); return null; } };
+class DerivedReturnSymbol extends BaseNoReturn { constructor() { super(); return globalSymbol; } };
+class DerivedThrow extends BaseNoReturn { constructor() { super(); throw "Thrown Exception String"; } };
+
+// Derived - Implicit => return this.
+shouldBeTrue('(new DerivedNoReturn) instanceof DerivedNoReturn');
+
+// Derived - Early return => return this.
+shouldBeTrue('(new DerivedReturnImplicit) instanceof DerivedReturnImplicit');
+shouldBeTrue('(new DerivedReturnImplicit) !== undefined');
+shouldBeTrue('(new DerivedReturnUndefined) instanceof DerivedReturnUndefined');
+shouldBeTrue('(new DerivedReturnUndefined) !== undefined');
+
+// Derived - return this => return this.
+shouldBeTrue('(new DerivedReturnThis) instanceof DerivedReturnThis');
+
+// Derived - return Object => return object, not instance.
+shouldBeFalse('(new DerivedReturnObject) instanceof DerivedReturnObject');
+shouldBeTrue('typeof (new DerivedReturnObject) === "object"');
+shouldBeFalse('(new DerivedReturnObject2) instanceof DerivedReturnObject2');
+shouldBeTrue('(new DerivedReturnObject2) === globalVariable');
+
+// Derived - return non-Object => exception.
+shouldThrow('(new DerivedReturnString)');
+shouldThrow('(new DerivedReturnNumber)');
+shouldThrow('(new DerivedReturnNull)');
+shouldThrow('(new DerivedReturnSymbol)');
+shouldThrow('(new DerivedThrow)');
+
+
+debug(''); debug('Derived class not calling super()');
+class DerivedNoSuperNoReturn extends BaseNoReturn { constructor() { } };
+class DerivedNoSuperReturn extends BaseNoReturn { constructor() { return; } };
+class DerivedNoSuperReturnUndefined extends BaseNoReturn { constructor() { return undefined; } };
+class DerivedNoSuperReturnObject extends BaseNoReturn { constructor() { return {a:1}; } };
+class DerivedNoSuperReturnObject2 extends BaseNoReturn { constructor() { return globalVariable; } };
+class DerivedNoSuperReturnThis extends BaseNoReturn { constructor() { return this; } };
+class DerivedNoSuperReturnString extends BaseNoReturn { constructor() { return "test"; } };
+class DerivedNoSuperReturnNumber extends BaseNoReturn { constructor() { return 1; } };
+class DerivedNoSuperReturnNull extends BaseNoReturn { constructor() { return null; } };
+class DerivedNoSuperReturnSymbol extends BaseNoReturn { constructor() { return globalSymbol; } };
+class DerivedNoSuperThrow extends BaseNoReturn { constructor() { throw "Thrown Exception String"; } };
+
+// Derived without super() - Implicit => return this => TDZ.
+shouldThrow('(new DerivedNoSuperNoReturn)');
+
+// Derived without super() - Early return => return this => TDZ.
+shouldThrow('(new DerivedNoSuperReturnImplicit)');
+shouldThrow('(new DerivedNoSuperReturnUndefined)');
+
+// Derived without super() - return this => return this => TDZ
+shouldThrow('(new DerivedNoSuperReturnThis)');
+
+// Derived without super() - return Object => no this access => return object, not instance
+shouldNotThrow('(new DerivedNoSuperReturnObject)');
+shouldNotThrow('(new DerivedNoSuperReturnObject2)');
+
+// Derived without super() - return non-Object => exception
+shouldThrow('(new DerivedNoSuperReturnString)'); // TypeError
+shouldThrow('(new DerivedNoSuperReturnNumber)'); // TypeError
+shouldThrow('(new DerivedNoSuperReturnNull)'); // TypeError
+shouldThrow('(new DerivedNoSuperReturnSymbol)'); // TypeError
+shouldThrow('(new DerivedNoSuperThrow)'); // Thrown exception
+
+
+debug(''); debug('Derived class with default constructor and base class returning different values');
+class DerivedDefaultConstructorWithBaseNoReturn extends BaseNoReturn { };
+class DerivedDefaultConstructorWithBaseReturnImplicit extends BaseReturnImplicit { };
+class DerivedDefaultConstructorWithBaseReturnUndefined extends BaseReturnUndefined { };
+class DerivedDefaultConstructorWithBaseReturnThis extends BaseReturnThis { };
+class DerivedDefaultConstructorWithBaseReturnObject extends BaseReturnObject { };
+class DerivedDefaultConstructorWithBaseReturnObject2 extends BaseReturnObject2 { };
+class DerivedDefaultConstructorWithBaseReturnString extends BaseReturnString { };
+class DerivedDefaultConstructorWithBaseReturnNumber extends BaseReturnNumber { };
+class DerivedDefaultConstructorWithBaseReturnNull extends BaseReturnNull { };
+class DerivedDefaultConstructorWithBaseReturnSymbol extends BaseReturnSymbol { };
+class DerivedDefaultConstructorWithBaseThrow extends BaseThrow { };
+
+// Derived default constructor - implicit "super(...arguments)" return the result of the base (Object or this).
+shouldBeTrue('(new DerivedDefaultConstructorWithBaseNoReturn) instanceof DerivedDefaultConstructorWithBaseNoReturn');
+shouldBeTrue('(new DerivedDefaultConstructorWithBaseReturnImplicit) instanceof DerivedDefaultConstructorWithBaseReturnImplicit');
+shouldBeTrue('(new DerivedDefaultConstructorWithBaseReturnUndefined) instanceof DerivedDefaultConstructorWithBaseReturnUndefined');
+shouldBeFalse('(new DerivedDefaultConstructorWithBaseReturnObject) instanceof DerivedDefaultConstructorWithBaseReturnObject');
+shouldBeTrue('typeof (new DerivedDefaultConstructorWithBaseReturnObject) === "object"');
+shouldBeFalse('(new DerivedDefaultConstructorWithBaseReturnObject2) instanceof DerivedDefaultConstructorWithBaseReturnObject2');
+shouldBeTrue('(new DerivedDefaultConstructorWithBaseReturnObject2) === globalVariable');
+shouldBeTrue('(new DerivedDefaultConstructorWithBaseReturnThis) instanceof DerivedDefaultConstructorWithBaseReturnThis');
+shouldBeTrue('(new DerivedDefaultConstructorWithBaseReturnString) instanceof DerivedDefaultConstructorWithBaseReturnString');
+shouldBeTrue('(new DerivedDefaultConstructorWithBaseReturnNumber) instanceof DerivedDefaultConstructorWithBaseReturnNumber');
+shouldBeTrue('(new DerivedDefaultConstructorWithBaseReturnNull) instanceof DerivedDefaultConstructorWithBaseReturnNull');
+shouldBeTrue('(new DerivedDefaultConstructorWithBaseReturnSymbol) instanceof DerivedDefaultConstructorWithBaseReturnSymbol');
+shouldThrow('(new DerivedDefaultConstructorWithBaseThrow)');
+
+var successfullyParsed = true;
diff --git a/deps/v8/test/webkit/class-syntax-call-expected.txt b/deps/v8/test/webkit/class-syntax-call-expected.txt
new file mode 100644
index 0000000000..79045ace95
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-call-expected.txt
@@ -0,0 +1,16 @@
+Tests for calling the constructors of ES6 classes
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS new A did not throw exception.
+PASS A() threw exception TypeError: Class constructors cannot be invoked without 'new'.
+PASS new B did not throw exception.
+PASS B() threw exception TypeError: Class constructors cannot be invoked without 'new'.
+PASS new (class { constructor() {} })() did not throw exception.
+PASS (class { constructor() {} })() threw exception TypeError: Class constructors cannot be invoked without 'new'.
+PASS new (class extends null { constructor() { super() } })() threw exception TypeError: function () {} is not a constructor.
+PASS (class extends null { constructor() { super() } })() threw exception TypeError: Class constructors cannot be invoked without 'new'.
+PASS successfullyParsed is true
+
+TEST COMPLETE
diff --git a/deps/v8/test/webkit/class-syntax-call.js b/deps/v8/test/webkit/class-syntax-call.js
new file mode 100644
index 0000000000..3cf82a8899
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-call.js
@@ -0,0 +1,40 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-sloppy
+
+description('Tests for calling the constructors of ES6 classes');
+
+class A { constructor() {} };
+class B extends A { constructor() { super() } };
+
+shouldNotThrow('new A');
+shouldThrow('A()', '"TypeError: Class constructors cannot be invoked without \'new\'"');
+shouldNotThrow('new B');
+shouldThrow('B()', '"TypeError: Class constructors cannot be invoked without \'new\'"');
+shouldNotThrow('new (class { constructor() {} })()');
+shouldThrow('(class { constructor() {} })()', '"TypeError: Class constructors cannot be invoked without \'new\'"');
+shouldThrow('new (class extends null { constructor() { super() } })()', '"TypeError: function () {} is not a constructor"');
+shouldThrow('(class extends null { constructor() { super() } })()', '"TypeError: Class constructors cannot be invoked without \'new\'"');
+
+var successfullyParsed = true;
diff --git a/deps/v8/test/webkit/class-syntax-declaration-expected.txt b/deps/v8/test/webkit/class-syntax-declaration-expected.txt
new file mode 100644
index 0000000000..f1466c5114
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-declaration-expected.txt
@@ -0,0 +1,43 @@
+Tests for ES6 class syntax declarations
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS constructorCallCount is 0
+PASS A.someStaticMethod() is staticMethodValue
+PASS A.someStaticGetter is getterValue
+PASS setterValue = undefined; A.someStaticSetter = 123; setterValue is 123
+PASS (new A).someInstanceMethod() is instanceMethodValue
+PASS constructorCallCount is 1
+PASS (new A).someGetter is getterValue
+PASS constructorCallCount is 2
+PASS (new A).someGetter is getterValue
+PASS setterValue = undefined; (new A).someSetter = 789; setterValue is 789
+PASS (new A).__proto__ is A.prototype
+PASS A.prototype.constructor is A
+PASS class threw exception SyntaxError: Unexpected end of input.
+PASS class [ threw exception SyntaxError: Unexpected token [.
+PASS class { threw exception SyntaxError: Unexpected token {.
+PASS class X { threw exception SyntaxError: Unexpected end of input.
+PASS class X { ( } threw exception SyntaxError: Unexpected token (.
+PASS class X {} did not throw exception.
+PASS class X { constructor() {} constructor() {} } threw exception SyntaxError: A class may only have one constructor.
+PASS class X { get constructor() {} } threw exception SyntaxError: Class constructor may not be an accessor.
+PASS class X { set constructor() {} } threw exception SyntaxError: Class constructor may not be an accessor.
+PASS class X { constructor() {} static constructor() { return staticMethodValue; } } did not throw exception.
+PASS class X { constructor() {} static constructor() { return staticMethodValue; } }; X.constructor() is staticMethodValue
+PASS class X { constructor() {} static prototype() {} } threw exception SyntaxError: Classes may not have static property named prototype.
+PASS class X { constructor() {} static get prototype() {} } threw exception SyntaxError: Classes may not have static property named prototype.
+PASS class X { constructor() {} static set prototype() {} } threw exception SyntaxError: Classes may not have static property named prototype.
+PASS class X { constructor() {} prototype() { return instanceMethodValue; } } did not throw exception.
+PASS class X { constructor() {} prototype() { return instanceMethodValue; } }; (new X).prototype() is instanceMethodValue
+PASS class X { constructor() {} set foo(a) {} } did not throw exception.
+FAIL class X { constructor() {} set foo({x, y}) {} } should not throw exception. Threw exception SyntaxError: Unexpected token {.
+PASS class X { constructor() {} set foo() {} } threw exception SyntaxError: Setter must have exactly one formal parameter..
+PASS class X { constructor() {} set foo(a, b) {} } threw exception SyntaxError: Setter must have exactly one formal parameter..
+PASS class X { constructor() {} get foo() {} } did not throw exception.
+PASS class X { constructor() {} get foo(x) {} } threw exception SyntaxError: Getter must not have any formal parameters..
+PASS class X { constructor() {} get foo({x, y}) {} } threw exception SyntaxError: Unexpected token {.
+PASS successfullyParsed is true
+
+TEST COMPLETE
diff --git a/deps/v8/test/webkit/class-syntax-declaration.js b/deps/v8/test/webkit/class-syntax-declaration.js
new file mode 100644
index 0000000000..3c9aed7441
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-declaration.js
@@ -0,0 +1,83 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-sloppy
+
+description('Tests for ES6 class syntax declarations');
+
+var constructorCallCount = 0;
+const staticMethodValue = [1];
+const instanceMethodValue = [2];
+const getterValue = [3];
+var setterValue = undefined;
+class A {
+    constructor() { constructorCallCount++; }
+    static someStaticMethod() { return staticMethodValue; }
+    static get someStaticGetter() { return getterValue; }
+    static set someStaticSetter(value) { setterValue = value; }
+    someInstanceMethod() { return instanceMethodValue; }
+    get someGetter() { return getterValue; }
+    set someSetter(value) { setterValue = value; }
+}
+
+shouldBe("constructorCallCount", "0");
+shouldBe("A.someStaticMethod()", "staticMethodValue");
+shouldBe("A.someStaticGetter", "getterValue");
+shouldBe("setterValue = undefined; A.someStaticSetter = 123; setterValue", "123");
+shouldBe("(new A).someInstanceMethod()", "instanceMethodValue");
+shouldBe("constructorCallCount", "1");
+shouldBe("(new A).someGetter", "getterValue");
+shouldBe("constructorCallCount", "2");
+shouldBe("(new A).someGetter", "getterValue");
+shouldBe("setterValue = undefined; (new A).someSetter = 789; setterValue", "789");
+shouldBe("(new A).__proto__", "A.prototype");
+shouldBe("A.prototype.constructor", "A");
+
+shouldThrow("class", "'SyntaxError: Unexpected end of input'");
+shouldThrow("class [", "'SyntaxError: Unexpected token ['");
+shouldThrow("class {", "'SyntaxError: Unexpected token {'");
+shouldThrow("class X {", "'SyntaxError: Unexpected end of input'");
+shouldThrow("class X { ( }", "'SyntaxError: Unexpected token ('");
+shouldNotThrow("class X {}");
+
+shouldThrow("class X { constructor() {} constructor() {} }", "'SyntaxError: A class may only have one constructor'");
+shouldThrow("class X { get constructor() {} }", "'SyntaxError: Class constructor may not be an accessor'");
+shouldThrow("class X { set constructor() {} }", "'SyntaxError: Class constructor may not be an accessor'");
+shouldNotThrow("class X { constructor() {} static constructor() { return staticMethodValue; } }");
+shouldBe("class X { constructor() {} static constructor() { return staticMethodValue; } }; X.constructor()", "staticMethodValue");
+
+shouldThrow("class X { constructor() {} static prototype() {} }", "'SyntaxError: Classes may not have static property named prototype'");
+shouldThrow("class X { constructor() {} static get prototype() {} }", "'SyntaxError: Classes may not have static property named prototype'");
+shouldThrow("class X { constructor() {} static set prototype() {} }", "'SyntaxError: Classes may not have static property named prototype'");
+shouldNotThrow("class X { constructor() {} prototype() { return instanceMethodValue; } }");
+shouldBe("class X { constructor() {} prototype() { return instanceMethodValue; } }; (new X).prototype()", "instanceMethodValue");
+
+shouldNotThrow("class X { constructor() {} set foo(a) {} }");
+shouldNotThrow("class X { constructor() {} set foo({x, y}) {} }");
+shouldThrow("class X { constructor() {} set foo() {} }");
+shouldThrow("class X { constructor() {} set foo(a, b) {} }");
+shouldNotThrow("class X { constructor() {} get foo() {} }");
+shouldThrow("class X { constructor() {} get foo(x) {} }");
+shouldThrow("class X { constructor() {} get foo({x, y}) {} }");
+
+var successfullyParsed = true;
diff --git a/deps/v8/test/webkit/class-syntax-default-constructor-expected.txt b/deps/v8/test/webkit/class-syntax-default-constructor-expected.txt
new file mode 100644
index 0000000000..b08e7f0a1e
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-default-constructor-expected.txt
@@ -0,0 +1,18 @@
+Tests for ES6 class syntax default constructor
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS new A instanceof A is true
+PASS A() threw exception TypeError: Class constructors cannot be invoked without 'new'.
+PASS A.prototype.constructor instanceof Function is true
+PASS A.prototype.constructor.name is "A"
+PASS new B instanceof A; new B instanceof A is true
+PASS B() threw exception TypeError: Class constructors cannot be invoked without 'new'.
+PASS B.prototype.constructor.name is "B"
+PASS A !== B is true
+PASS A.prototype.constructor !== B.prototype.constructor is true
+PASS new (class extends (class { constructor(a, b) { return [a, b]; } }) {})(1, 2) is [1, 2]
+PASS successfullyParsed is true
+
+TEST COMPLETE
diff --git a/deps/v8/test/webkit/class-syntax-default-constructor.js b/deps/v8/test/webkit/class-syntax-default-constructor.js
new file mode 100644
index 0000000000..841afddadc
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-default-constructor.js
@@ -0,0 +1,42 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-sloppy
+
+description('Tests for ES6 class syntax default constructor');
+
+class A { };
+class B extends A { };
+
+shouldBeTrue('new A instanceof A');
+shouldThrow('A()', '"TypeError: Class constructors cannot be invoked without \'new\'"');
+shouldBeTrue('A.prototype.constructor instanceof Function');
+shouldBe('A.prototype.constructor.name', '"A"');
+shouldBeTrue('new B instanceof A; new B instanceof A');
+shouldThrow('B()', '"TypeError: Class constructors cannot be invoked without \'new\'"');
+shouldBe('B.prototype.constructor.name', '"B"');
+shouldBeTrue('A !== B');
+shouldBeTrue('A.prototype.constructor !== B.prototype.constructor');
+shouldBe('new (class extends (class { constructor(a, b) { return [a, b]; } }) {})(1, 2)', '[1, 2]');
+
+var successfullyParsed = true;
diff --git a/deps/v8/test/webkit/class-syntax-expression-expected.txt b/deps/v8/test/webkit/class-syntax-expression-expected.txt
new file mode 100644
index 0000000000..aa1cfb76b0
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-expression-expected.txt
@@ -0,0 +1,41 @@
+Tests for ES6 class syntax expressions
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS constructorCallCount is 0
+PASS A.someStaticMethod() is staticMethodValue
+PASS A.someStaticGetter is getterValue
+PASS setterValue = undefined; A.someStaticSetter = 123; setterValue is 123
+PASS (new A).someInstanceMethod() is instanceMethodValue
+PASS constructorCallCount is 1
+PASS (new A).someGetter is getterValue
+PASS constructorCallCount is 2
+PASS (new A).someGetter is getterValue
+PASS setterValue = undefined; (new A).someSetter = 789; setterValue is 789
+PASS (new A).__proto__ is A.prototype
+PASS A.prototype.constructor is A
+PASS x = class threw exception SyntaxError: Unexpected end of input.
+PASS x = class { threw exception SyntaxError: Unexpected end of input.
+PASS x = class { ( } threw exception SyntaxError: Unexpected token (.
+PASS x = class {} did not throw exception.
+PASS x = class { constructor() {} constructor() {} } threw exception SyntaxError: A class may only have one constructor.
+PASS x = class { get constructor() {} } threw exception SyntaxError: Class constructor may not be an accessor.
+PASS x = class { set constructor() {} } threw exception SyntaxError: Class constructor may not be an accessor.
+PASS x = class { constructor() {} static constructor() { return staticMethodValue; } } did not throw exception.
+PASS x = class { constructor() {} static constructor() { return staticMethodValue; } }; x.constructor() is staticMethodValue
+PASS x = class { constructor() {} static prototype() {} } threw exception SyntaxError: Classes may not have static property named prototype.
+PASS x = class { constructor() {} static get prototype() {} } threw exception SyntaxError: Classes may not have static property named prototype.
+PASS x = class { constructor() {} static set prototype() {} } threw exception SyntaxError: Classes may not have static property named prototype.
+PASS x = class  { constructor() {} prototype() { return instanceMethodValue; } } did not throw exception.
+PASS x = class { constructor() {} prototype() { return instanceMethodValue; } }; (new x).prototype() is instanceMethodValue
+PASS x = class { constructor() {} set foo(a) {} } did not throw exception.
+FAIL x = class { constructor() {} set foo({x, y}) {} } should not throw exception. Threw exception SyntaxError: Unexpected token {.
+PASS x = class { constructor() {} set foo() {} } threw exception SyntaxError: Setter must have exactly one formal parameter..
+PASS x = class { constructor() {} set foo(a, b) {} } threw exception SyntaxError: Setter must have exactly one formal parameter..
+PASS x = class { constructor() {} get foo() {} } did not throw exception.
+PASS x = class { constructor() {} get foo(x) {} } threw exception SyntaxError: Getter must not have any formal parameters..
+PASS x = class { constructor() {} get foo({x, y}) {} } threw exception SyntaxError: Unexpected token {.
+PASS successfullyParsed is true
+
+TEST COMPLETE
diff --git a/deps/v8/test/webkit/class-syntax-expression.js b/deps/v8/test/webkit/class-syntax-expression.js
new file mode 100644
index 0000000000..3272b81f7e
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-expression.js
@@ -0,0 +1,81 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-sloppy
+
+description('Tests for ES6 class syntax expressions');
+
+var constructorCallCount = 0;
+const staticMethodValue = [1];
+const instanceMethodValue = [2];
+const getterValue = [3];
+var setterValue = undefined;
+var A = class {
+    constructor() { constructorCallCount++; }
+    static someStaticMethod() { return staticMethodValue; }
+    static get someStaticGetter() { return getterValue; }
+    static set someStaticSetter(value) { setterValue = value; }
+    someInstanceMethod() { return instanceMethodValue; }
+    get someGetter() { return getterValue; }
+    set someSetter(value) { setterValue = value; }
+};
+
+shouldBe("constructorCallCount", "0");
+shouldBe("A.someStaticMethod()", "staticMethodValue");
+shouldBe("A.someStaticGetter", "getterValue");
+shouldBe("setterValue = undefined; A.someStaticSetter = 123; setterValue", "123");
+shouldBe("(new A).someInstanceMethod()", "instanceMethodValue");
+shouldBe("constructorCallCount", "1");
+shouldBe("(new A).someGetter", "getterValue");
+shouldBe("constructorCallCount", "2");
+shouldBe("(new A).someGetter", "getterValue");
+shouldBe("setterValue = undefined; (new A).someSetter = 789; setterValue", "789");
+shouldBe("(new A).__proto__", "A.prototype");
+shouldBe("A.prototype.constructor", "A");
+
+shouldThrow("x = class", "'SyntaxError: Unexpected end of input'");
+shouldThrow("x = class {", "'SyntaxError: Unexpected end of input'");
+shouldThrow("x = class { ( }", "'SyntaxError: Unexpected token ('");
+shouldNotThrow("x = class {}");
+
+shouldThrow("x = class { constructor() {} constructor() {} }", "'SyntaxError: A class may only have one constructor'");
+shouldThrow("x = class { get constructor() {} }", "'SyntaxError: Class constructor may not be an accessor'");
+shouldThrow("x = class { set constructor() {} }", "'SyntaxError: Class constructor may not be an accessor'");
+shouldNotThrow("x = class { constructor() {} static constructor() { return staticMethodValue; } }");
+shouldBe("x = class { constructor() {} static constructor() { return staticMethodValue; } }; x.constructor()", "staticMethodValue");
+
+shouldThrow("x = class { constructor() {} static prototype() {} }", "'SyntaxError: Classes may not have static property named prototype'");
+shouldThrow("x = class { constructor() {} static get prototype() {} }", "'SyntaxError: Classes may not have static property named prototype'");
+shouldThrow("x = class { constructor() {} static set prototype() {} }", "'SyntaxError: Classes may not have static property named prototype'");
+shouldNotThrow("x = class  { constructor() {} prototype() { return instanceMethodValue; } }");
+shouldBe("x = class { constructor() {} prototype() { return instanceMethodValue; } }; (new x).prototype()", "instanceMethodValue");
+
+shouldNotThrow("x = class { constructor() {} set foo(a) {} }");
+shouldNotThrow("x = class { constructor() {} set foo({x, y}) {} }");
+shouldThrow("x = class { constructor() {} set foo() {} }");
+shouldThrow("x = class { constructor() {} set foo(a, b) {} }");
+shouldNotThrow("x = class { constructor() {} get foo() {} }");
+shouldThrow("x = class { constructor() {} get foo(x) {} }");
+shouldThrow("x = class { constructor() {} get foo({x, y}) {} }");
+
+var successfullyParsed = true;
diff --git a/deps/v8/test/webkit/class-syntax-extends-expected.txt b/deps/v8/test/webkit/class-syntax-extends-expected.txt
new file mode 100644
index 0000000000..b3b4c8ee60
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-extends-expected.txt
@@ -0,0 +1,72 @@
+Tests for ES6 class syntax "extends"
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS (new Base) instanceof Base is true
+PASS Object.getPrototypeOf(new Base) is Base.prototype
+PASS (new Derived) instanceof Derived is true
+PASS Object.getPrototypeOf(new Derived) is Derived.prototype
+PASS Object.getPrototypeOf(Derived.prototype) is Base.prototype
+PASS (new Derived).baseMethod() is "base"
+PASS (new Derived).overridenMethod() is "derived"
+PASS Derived.staticBaseMethod() is "base"
+PASS Derived.staticOverridenMethod() is "derived"
+PASS x = class extends threw exception SyntaxError: Unexpected end of input.
+PASS x = class extends threw exception SyntaxError: Unexpected end of input.
+PASS x = class extends Base { threw exception SyntaxError: Unexpected end of input.
+PASS x = class extends Base { } did not throw exception.
+PASS x = class extends Base { constructor() { } } did not throw exception.
+PASS x.__proto__ is Base
+PASS Object.getPrototypeOf(x) is Base
+PASS x.prototype.__proto__ is Base.prototype
+PASS Object.getPrototypeOf(x.prototype) is Base.prototype
+PASS x = class extends null { constructor() { } }; x.__proto__ is Function.prototype
+PASS x.__proto__ is Function.prototype
+PASS x = class extends 3 { constructor() { } }; x.__proto__ threw exception TypeError: Class extends value 3 is not a function or null.
+PASS x = class extends "abc" { constructor() { } }; x.__proto__ threw exception TypeError: Class extends value abc is not a function or null.
+PASS baseWithBadPrototype = function () {}; baseWithBadPrototype.prototype = 3; new baseWithBadPrototype did not throw exception.
+PASS x = class extends baseWithBadPrototype { constructor() { } } threw exception TypeError: Class extends value does not have valid prototype property 3.
+PASS baseWithBadPrototype.prototype = "abc" did not throw exception.
+PASS x = class extends baseWithBadPrototype { constructor() { } } threw exception TypeError: Class extends value does not have valid prototype property abc.
+PASS baseWithBadPrototype.prototype = null; x = class extends baseWithBadPrototype { constructor() { } } did not throw exception.
+PASS x = 1; c = class extends ++x { constructor() { } }; threw exception SyntaxError: Unexpected token ++.
+PASS x = 1; c = class extends x++ { constructor() { } }; threw exception SyntaxError: Unexpected token ++.
+PASS x = 1; c = class extends (++x) { constructor() { } }; threw exception TypeError: Class extends value 2 is not a function or null.
+PASS x = 1; c = class extends (x++) { constructor() { } }; threw exception TypeError: Class extends value 1 is not a function or null.
+PASS x = 1; try { c = class extends (++x) { constructor() { } } } catch (e) { }; x is 2
+PASS x = 1; try { c = class extends (x++) { constructor() { } } } catch (e) { }; x is 2
+PASS namespace = {}; namespace.A = class { }; namespace.B = class extends namespace.A { } did not throw exception.
+PASS namespace = {}; namespace.A = class A { }; namespace.B = class B extends namespace.A { } did not throw exception.
+PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends namespace.A { constructor() { } } did not throw exception.
+PASS namespace = {}; namespace.A = class A { constructor() { } }; namespace.B = class B extends namespace.A { constructor() { } } did not throw exception.
+PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (namespace.A) { constructor() { } } did not throw exception.
+PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends namespace["A"] { constructor() { } } did not throw exception.
+PASS namespace = {}; namespace.A = class { constructor() { } }; function getClassA() { return namespace.A }; namespace.B = class extends getClassA() { constructor() { } } did not throw exception.
+PASS namespace = {}; namespace.A = class { constructor() { } }; function getClass(prop) { return namespace[prop] }; namespace.B = class extends getClass("A") { constructor() { } } did not throw exception.
+PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (false||null||namespace.A) { constructor() { } } did not throw exception.
+PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends false||null||namespace.A { constructor() { } } threw exception SyntaxError: Unexpected token ||.
+PASS x = 1; namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (x++, namespace.A) { constructor() { } }; did not throw exception.
+PASS x = 1; namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (namespace.A, x++) { constructor() { } }; threw exception TypeError: Class extends value 1 is not a function or null.
+PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends new namespace.A { constructor() { } } threw exception TypeError: Class extends value [object Object] is not a function or null.
+PASS namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends new namespace.A() { constructor() { } } threw exception TypeError: Class extends value [object Object] is not a function or null.
+PASS x = 1; namespace = {}; namespace.A = class { constructor() { } }; try { namespace.B = class extends (x++, namespace.A) { constructor() { } } } catch (e) { } x is 2
+PASS x = 1; namespace = {}; namespace.A = class { constructor() { } }; try { namespace.B = class extends (namespace.A, x++) { constructor() { } } } catch (e) { } x is 2
+PASS Object.getPrototypeOf((class { constructor () { } }).prototype) is Object.prototype
+PASS Object.getPrototypeOf((class extends null { constructor () { super(); } }).prototype) is null
+PASS new (class extends undefined { constructor () { this } }) threw exception TypeError: Class extends value undefined is not a function or null.
+PASS new (class extends undefined { constructor () { super(); } }) threw exception TypeError: Class extends value undefined is not a function or null.
+PASS x = {}; new (class extends undefined { constructor () { return x; } }) threw exception TypeError: Class extends value undefined is not a function or null.
+PASS y = 12; new (class extends undefined { constructor () { return y; } }) threw exception TypeError: Class extends value undefined is not a function or null.
+FAIL class x {}; new (class extends null { constructor () { return new x; } }) instanceof x should be true. Threw exception TypeError: x is not a function
+PASS new (class extends null { constructor () { this; } }) threw exception ReferenceError: this is not defined.
+PASS new (class extends null { constructor () { super(); } }) threw exception TypeError: function () {} is not a constructor.
+PASS x = {}; new (class extends null { constructor () { return x } }) is x
+PASS y = 12; new (class extends null { constructor () { return y; } }) threw exception TypeError: Derived constructors may only return object or undefined.
+FAIL class x {}; new (class extends null { constructor () { return new x; } }) instanceof x should be true. Threw exception TypeError: x is not a function
+PASS x = null; Object.getPrototypeOf((class extends x { }).prototype) is null
+PASS Object.prototype.isPrototypeOf(class { }) is true
+PASS Function.prototype.isPrototypeOf(class { }) is true
+PASS successfullyParsed is true
+
+TEST COMPLETE
diff --git a/deps/v8/test/webkit/class-syntax-extends.js b/deps/v8/test/webkit/class-syntax-extends.js
new file mode 100644
index 0000000000..3c7ee19cef
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-extends.js
@@ -0,0 +1,111 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-sloppy
+
+description('Tests for ES6 class syntax "extends"');
+
+class Base {
+    constructor() { }
+    baseMethod() { return 'base'; }
+    overridenMethod() { return 'base'; }
+    static staticBaseMethod() { return 'base'; }
+    static staticOverridenMethod() { return 'base'; }
+}
+
+class Derived extends Base {
+    constructor() { super(); }
+    overridenMethod() { return 'derived'; }
+    static staticOverridenMethod() { return 'derived'; }
+}
+
+shouldBeTrue('(new Base) instanceof Base');
+shouldBe('Object.getPrototypeOf(new Base)', 'Base.prototype');
+shouldBeTrue('(new Derived) instanceof Derived');
+shouldBe('Object.getPrototypeOf(new Derived)', 'Derived.prototype');
+shouldBe('Object.getPrototypeOf(Derived.prototype)', 'Base.prototype');
+shouldBe('(new Derived).baseMethod()', '"base"');
+shouldBe('(new Derived).overridenMethod()', '"derived"');
+shouldBe('Derived.staticBaseMethod()', '"base"');
+shouldBe('Derived.staticOverridenMethod()', '"derived"');
+
+shouldThrow('x = class extends', '"SyntaxError: Unexpected end of input"');
+shouldThrow('x = class extends', '"SyntaxError: Unexpected end of input"');
+shouldThrow('x = class extends Base {', '"SyntaxError: Unexpected end of input"');
+shouldNotThrow('x = class extends Base { }');
+shouldNotThrow('x = class extends Base { constructor() { } }');
+shouldBe('x.__proto__', 'Base');
+shouldBe('Object.getPrototypeOf(x)', 'Base');
+shouldBe('x.prototype.__proto__', 'Base.prototype');
+shouldBe('Object.getPrototypeOf(x.prototype)', 'Base.prototype');
+shouldBe('x = class extends null { constructor() { } }; x.__proto__', 'Function.prototype');
+shouldBe('x.__proto__', 'Function.prototype');
+shouldThrow('x = class extends 3 { constructor() { } }; x.__proto__', '"TypeError: Class extends value 3 is not a function or null"');
+shouldThrow('x = class extends "abc" { constructor() { } }; x.__proto__', '"TypeError: Class extends value abc is not a function or null"');
+shouldNotThrow('baseWithBadPrototype = function () {}; baseWithBadPrototype.prototype = 3; new baseWithBadPrototype');
+shouldThrow('x = class extends baseWithBadPrototype { constructor() { } }', '"TypeError: Class extends value does not have valid prototype property 3"');
+shouldNotThrow('baseWithBadPrototype.prototype = "abc"');
+shouldThrow('x = class extends baseWithBadPrototype { constructor() { } }', '"TypeError: Class extends value does not have valid prototype property abc"');
+shouldNotThrow('baseWithBadPrototype.prototype = null; x = class extends baseWithBadPrototype { constructor() { } }');
+
+shouldThrow('x = 1; c = class extends ++x { constructor() { } };');
+shouldThrow('x = 1; c = class extends x++ { constructor() { } };');
+shouldThrow('x = 1; c = class extends (++x) { constructor() { } };');
+shouldThrow('x = 1; c = class extends (x++) { constructor() { } };');
+shouldBe('x = 1; try { c = class extends (++x) { constructor() { } } } catch (e) { }; x', '2');
+shouldBe('x = 1; try { c = class extends (x++) { constructor() { } } } catch (e) { }; x', '2');
+
+shouldNotThrow('namespace = {}; namespace.A = class { }; namespace.B = class extends namespace.A { }');
+shouldNotThrow('namespace = {}; namespace.A = class A { }; namespace.B = class B extends namespace.A { }');
+shouldNotThrow('namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends namespace.A { constructor() { } }');
+shouldNotThrow('namespace = {}; namespace.A = class A { constructor() { } }; namespace.B = class B extends namespace.A { constructor() { } }');
+shouldNotThrow('namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (namespace.A) { constructor() { } }');
+shouldNotThrow('namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends namespace["A"] { constructor() { } }');
+shouldNotThrow('namespace = {}; namespace.A = class { constructor() { } }; function getClassA() { return namespace.A }; namespace.B = class extends getClassA() { constructor() { } }');
+shouldNotThrow('namespace = {}; namespace.A = class { constructor() { } }; function getClass(prop) { return namespace[prop] }; namespace.B = class extends getClass("A") { constructor() { } }');
+shouldNotThrow('namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (false||null||namespace.A) { constructor() { } }');
+shouldThrow('namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends false||null||namespace.A { constructor() { } }');
+shouldNotThrow('x = 1; namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (x++, namespace.A) { constructor() { } };');
+shouldThrow('x = 1; namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends (namespace.A, x++) { constructor() { } };');
+shouldThrow('namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends new namespace.A { constructor() { } }');
+shouldThrow('namespace = {}; namespace.A = class { constructor() { } }; namespace.B = class extends new namespace.A() { constructor() { } }');
+shouldBe('x = 1; namespace = {}; namespace.A = class { constructor() { } }; try { namespace.B = class extends (x++, namespace.A) { constructor() { } } } catch (e) { } x', '2');
+shouldBe('x = 1; namespace = {}; namespace.A = class { constructor() { } }; try { namespace.B = class extends (namespace.A, x++) { constructor() { } } } catch (e) { } x', '2');
+
+shouldBe('Object.getPrototypeOf((class { constructor () { } }).prototype)', 'Object.prototype');
+shouldBe('Object.getPrototypeOf((class extends null { constructor () { super(); } }).prototype)', 'null');
+shouldThrow('new (class extends undefined { constructor () { this } })', '"TypeError: Class extends value undefined is not a function or null"');
+shouldThrow('new (class extends undefined { constructor () { super(); } })', '"TypeError: Class extends value undefined is not a function or null"');
+shouldThrow('x = {}; new (class extends undefined { constructor () { return x; } })', '"TypeError: Class extends value undefined is not a function or null"');
+shouldThrow('y = 12; new (class extends undefined { constructor () { return y; } })', '"TypeError: Class extends value undefined is not a function or null"');
+shouldBeTrue ('class x {}; new (class extends null { constructor () { return new x; } }) instanceof x');
+shouldThrow('new (class extends null { constructor () { this; } })', '"ReferenceError: this is not defined"');
+shouldThrow('new (class extends null { constructor () { super(); } })', '"TypeError: function () {} is not a constructor"');
+shouldBe('x = {}; new (class extends null { constructor () { return x } })', 'x');
+shouldThrow('y = 12; new (class extends null { constructor () { return y; } })', '"TypeError: Derived constructors may only return object or undefined"');
+shouldBeTrue ('class x {}; new (class extends null { constructor () { return new x; } }) instanceof x');
+shouldBe('x = null; Object.getPrototypeOf((class extends x { }).prototype)', 'null');
+shouldBeTrue('Object.prototype.isPrototypeOf(class { })');
+shouldBeTrue('Function.prototype.isPrototypeOf(class { })');
+
+var successfullyParsed = true;
diff --git a/deps/v8/test/webkit/class-syntax-name-expected.txt b/deps/v8/test/webkit/class-syntax-name-expected.txt
new file mode 100644
index 0000000000..10f38ff2c2
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-name-expected.txt
@@ -0,0 +1,125 @@
+Tests for ES6 class name semantics in class statements and expressions
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+Class statement
+PASS A threw exception ReferenceError: A is not defined.
+PASS 'use strict'; A threw exception ReferenceError: A is not defined.
+PASS class {} threw exception SyntaxError: Unexpected token {.
+PASS 'use strict'; class {} threw exception SyntaxError: Unexpected token {.
+PASS class { constructor() {} } threw exception SyntaxError: Unexpected token {.
+PASS 'use strict'; class { constructor() {} } threw exception SyntaxError: Unexpected token {.
+PASS class A { constructor() {} } did not throw exception.
+PASS 'use strict'; class A { constructor() {} } did not throw exception.
+PASS class A { constructor() {} }; A.toString() is 'class A { constructor() {} }'
+PASS 'use strict'; class A { constructor() {} }; A.toString() is 'class A { constructor() {} }'
+PASS class A { constructor() {} }; (new A) instanceof A is true
+PASS 'use strict'; class A { constructor() {} }; (new A) instanceof A is true
+PASS class A { constructor() { this.base = A; } }; (new A).base.toString() is 'class A { constructor() { this.base = A; } }'
+PASS 'use strict'; class A { constructor() { this.base = A; } }; (new A).base.toString() is 'class A { constructor() { this.base = A; } }'
+PASS class A { constructor() {} }; class B extends A {}; did not throw exception.
+PASS 'use strict'; class A { constructor() {} }; class B extends A {}; did not throw exception.
+PASS class A { constructor() {} }; class B extends A { constructor() {} }; B.toString() is 'class B extends A { constructor() {} }'
+PASS 'use strict'; class A { constructor() {} }; class B extends A { constructor() {} }; B.toString() is 'class B extends A { constructor() {} }'
+PASS class A { constructor() {} }; class B extends A {}; (new B) instanceof A is true
+PASS 'use strict'; class A { constructor() {} }; class B extends A {}; (new B) instanceof A is true
+PASS class A { constructor() {} }; class B extends A {}; (new B) instanceof B is true
+PASS 'use strict'; class A { constructor() {} }; class B extends A {}; (new B) instanceof B is true
+PASS class A { constructor() {} }; class B extends A { constructor() { super(); this.base = A; this.derived = B; } }; (new B).base.toString() is 'class A { constructor() {} }'
+PASS 'use strict'; class A { constructor() {} }; class B extends A { constructor() { super(); this.base = A; this.derived = B; } }; (new B).base.toString() is 'class A { constructor() {} }'
+PASS class A { constructor() {} }; class B extends A { constructor() { super(); this.base = A; this.derived = B; } }; (new B).derived.toString() is 'class B extends A { constructor() { super(); this.base = A; this.derived = B; } }'
+PASS 'use strict'; class A { constructor() {} }; class B extends A { constructor() { super(); this.base = A; this.derived = B; } }; (new B).derived.toString() is 'class B extends A { constructor() { super(); this.base = A; this.derived = B; } }'
+
+Class expression
+PASS A threw exception ReferenceError: A is not defined.
+PASS 'use strict'; A threw exception ReferenceError: A is not defined.
+PASS (class {}) did not throw exception.
+PASS 'use strict'; (class {}) did not throw exception.
+PASS (class { constructor(){} }) did not throw exception.
+PASS 'use strict'; (class { constructor(){} }) did not throw exception.
+PASS typeof (class {}) is "function"
+PASS 'use strict'; typeof (class {}) is "function"
+PASS (class A {}) did not throw exception.
+PASS 'use strict'; (class A {}) did not throw exception.
+PASS typeof (class A {}) is "function"
+PASS 'use strict'; typeof (class A {}) is "function"
+PASS (class A {}); A threw exception ReferenceError: A is not defined.
+PASS 'use strict'; (class A {}); A threw exception ReferenceError: A is not defined.
+PASS new (class A {}) did not throw exception.
+PASS 'use strict'; new (class A {}) did not throw exception.
+PASS typeof (new (class A {})) is "object"
+PASS 'use strict'; typeof (new (class A {})) is "object"
+PASS (new (class A { constructor() { this.base = A; } })).base did not throw exception.
+PASS 'use strict'; (new (class A { constructor() { this.base = A; } })).base did not throw exception.
+PASS (new (class A { constructor() { this.base = A; } })).base.toString() is "class A { constructor() { this.base = A; } }"
+PASS 'use strict'; (new (class A { constructor() { this.base = A; } })).base.toString() is "class A { constructor() { this.base = A; } }"
+PASS class A {}; (class B extends A {}) did not throw exception.
+PASS 'use strict'; class A {}; (class B extends A {}) did not throw exception.
+PASS class A {}; (class B extends A {}); B threw exception ReferenceError: B is not defined.
+PASS 'use strict'; class A {}; (class B extends A {}); B threw exception ReferenceError: B is not defined.
+PASS class A {}; new (class B extends A {}) did not throw exception.
+PASS 'use strict'; class A {}; new (class B extends A {}) did not throw exception.
+PASS class A {}; new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } }) did not throw exception.
+PASS 'use strict'; class A {}; new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } }) did not throw exception.
+PASS class A {}; (new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } })) instanceof A is true
+PASS 'use strict'; class A {}; (new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } })) instanceof A is true
+PASS class A { constructor() {} }; (new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } })).base.toString() is 'class A { constructor() {} }'
+PASS 'use strict'; class A { constructor() {} }; (new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } })).base.toString() is 'class A { constructor() {} }'
+PASS class A { constructor() {} }; (new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } })).derived.toString() is 'class B extends A { constructor() { super(); this.base = A; this.derived = B; } }'
+PASS 'use strict'; class A { constructor() {} }; (new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } })).derived.toString() is 'class B extends A { constructor() { super(); this.base = A; this.derived = B; } }'
+
+Class expression assignment to variable
+PASS A threw exception ReferenceError: A is not defined.
+PASS 'use strict'; A threw exception ReferenceError: A is not defined.
+PASS var VarA = class {} did not throw exception.
+PASS 'use strict'; var VarA = class {} did not throw exception.
+PASS var VarA = class { constructor() {} }; VarA.toString() is 'class { constructor() {} }'
+PASS 'use strict'; var VarA = class { constructor() {} }; VarA.toString() is 'class { constructor() {} }'
+PASS VarA threw exception ReferenceError: VarA is not defined.
+PASS 'use strict'; VarA threw exception ReferenceError: VarA is not defined.
+PASS var VarA = class A { constructor() {} } did not throw exception.
+PASS 'use strict'; var VarA = class A { constructor() {} } did not throw exception.
+PASS var VarA = class A { constructor() {} }; VarA.toString() is 'class A { constructor() {} }'
+PASS 'use strict'; var VarA = class A { constructor() {} }; VarA.toString() is 'class A { constructor() {} }'
+PASS var VarA = class A { constructor() {} }; A.toString() threw exception ReferenceError: A is not defined.
+PASS 'use strict'; var VarA = class A { constructor() {} }; A.toString() threw exception ReferenceError: A is not defined.
+PASS var VarA = class A { constructor() {} }; (new VarA) instanceof VarA is true
+PASS 'use strict'; var VarA = class A { constructor() {} }; (new VarA) instanceof VarA is true
+PASS var VarA = class A { constructor() { this.base = A; } }; (new VarA).base.toString() is 'class A { constructor() { this.base = A; } }'
+PASS 'use strict'; var VarA = class A { constructor() { this.base = A; } }; (new VarA).base.toString() is 'class A { constructor() { this.base = A; } }'
+PASS var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() {} }; did not throw exception.
+PASS 'use strict'; var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() {} }; did not throw exception.
+PASS var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() {} }; B threw exception ReferenceError: B is not defined.
+PASS 'use strict'; var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() {} }; B threw exception ReferenceError: B is not defined.
+PASS var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() {} }; VarB.toString() is 'class B extends VarA { constructor() {} }'
+PASS 'use strict'; var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() {} }; VarB.toString() is 'class B extends VarA { constructor() {} }'
+PASS var VarA = class A { constructor() {} }; var VarB = class B extends VarA { }; (new VarB) instanceof VarA is true
+PASS 'use strict'; var VarA = class A { constructor() {} }; var VarB = class B extends VarA { }; (new VarB) instanceof VarA is true
+PASS var VarA = class A { constructor() {} }; var VarB = class B extends VarA { }; (new VarB) instanceof VarB is true
+PASS 'use strict'; var VarA = class A { constructor() {} }; var VarB = class B extends VarA { }; (new VarB) instanceof VarB is true
+PASS var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() { super(); this.base = VarA; this.derived = B; this.derivedVar = VarB; } }; (new VarB).base === VarA is true
+PASS 'use strict'; var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() { super(); this.base = VarA; this.derived = B; this.derivedVar = VarB; } }; (new VarB).base === VarA is true
+PASS var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() { super(); this.base = VarA; this.derived = B; this.derivedVar = VarB; } }; (new VarB).derived === VarB is true
+PASS 'use strict'; var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() { super(); this.base = VarA; this.derived = B; this.derivedVar = VarB; } }; (new VarB).derived === VarB is true
+PASS var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() { super(); this.base = VarA; this.derived = B; this.derivedVar = VarB; } }; (new VarB).derivedVar === VarB is true
+PASS 'use strict'; var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() { super(); this.base = VarA; this.derived = B; this.derivedVar = VarB; } }; (new VarB).derivedVar === VarB is true
+
+Class statement binding in other circumstances
+PASS var result = A; result threw exception ReferenceError: A is not defined.
+PASS 'use strict'; var result = A; result threw exception ReferenceError: A is not defined.
+FAIL var result = A; class A {}; result should throw an exception. Was undefined.
+PASS 'use strict'; var result = A; class A {}; result threw exception ReferenceError: A is not defined.
+PASS class A { constructor() { A = 1; } }; new A threw exception TypeError: Assignment to constant variable..
+PASS 'use strict'; class A { constructor() { A = 1; } }; new A threw exception TypeError: Assignment to constant variable..
+PASS class A { constructor() { } }; A = 1; A is 1
+PASS 'use strict'; class A { constructor() { } }; A = 1; A is 1
+PASS class A {}; var result = A; result did not throw exception.
+PASS 'use strict'; class A {}; var result = A; result did not throw exception.
+PASS eval('var Foo = 10'); Foo is 10
+PASS 'use strict'; eval('var Foo = 10'); Foo threw exception ReferenceError: Foo is not defined.
+PASS eval('class Bar { constructor() {} }'); Bar.toString() is 'class Bar { constructor() {} }'
+PASS 'use strict'; eval('class Bar { constructor() {} }'); Bar.toString() threw exception ReferenceError: Bar is not defined.
+PASS successfullyParsed is true
+
+TEST COMPLETE
diff --git a/deps/v8/test/webkit/class-syntax-name.js b/deps/v8/test/webkit/class-syntax-name.js
new file mode 100644
index 0000000000..09faa3a54a
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-name.js
@@ -0,0 +1,115 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-sloppy
+
+description('Tests for ES6 class name semantics in class statements and expressions');
+
+function runTestShouldBe(statement, result) {
+    shouldBe(statement, result);
+    shouldBe("'use strict'; " + statement, result);
+}
+
+function runTestShouldBeTrue(statement) {
+    shouldBeTrue(statement);
+    shouldBeTrue("'use strict'; " + statement);
+}
+
+function runTestShouldThrow(statement) {
+    shouldThrow(statement);
+    shouldThrow("'use strict'; " + statement);
+}
+
+function runTestShouldNotThrow(statement) {
+    shouldNotThrow(statement);
+    shouldNotThrow("'use strict'; " + statement);
+}
+
+// Class statement. Class name added to global scope. Class name is available inside class scope and in global scope.
+debug('Class statement');
+runTestShouldThrow("A");
+runTestShouldThrow("class {}");
+runTestShouldThrow("class { constructor() {} }");
+runTestShouldNotThrow("class A { constructor() {} }");
+runTestShouldBe("class A { constructor() {} }; A.toString()", "'class A { constructor() {} }'");
+runTestShouldBeTrue("class A { constructor() {} }; (new A) instanceof A");
+runTestShouldBe("class A { constructor() { this.base = A; } }; (new A).base.toString()", "'class A { constructor() { this.base = A; } }'");
+runTestShouldNotThrow("class A { constructor() {} }; class B extends A {};");
+runTestShouldBe("class A { constructor() {} }; class B extends A { constructor() {} }; B.toString()", "'class B extends A { constructor() {} }'");
+runTestShouldBeTrue("class A { constructor() {} }; class B extends A {}; (new B) instanceof A");
+runTestShouldBeTrue("class A { constructor() {} }; class B extends A {}; (new B) instanceof B");
+runTestShouldBe("class A { constructor() {} }; class B extends A { constructor() { super(); this.base = A; this.derived = B; } }; (new B).base.toString()", "'class A { constructor() {} }'");
+runTestShouldBe("class A { constructor() {} }; class B extends A { constructor() { super(); this.base = A; this.derived = B; } }; (new B).derived.toString()", "'class B extends A { constructor() { super(); this.base = A; this.derived = B; } }'");
+
+// Class expression. Class name not added to scope. Class name is available inside class scope.
+debug(''); debug('Class expression');
+runTestShouldThrow("A");
+runTestShouldNotThrow("(class {})");
+runTestShouldNotThrow("(class { constructor(){} })");
+runTestShouldBe("typeof (class {})", '"function"');
+runTestShouldNotThrow("(class A {})");
+runTestShouldBe("typeof (class A {})", '"function"');
+runTestShouldThrow("(class A {}); A");
+runTestShouldNotThrow("new (class A {})");
+runTestShouldBe("typeof (new (class A {}))", '"object"');
+runTestShouldNotThrow("(new (class A { constructor() { this.base = A; } })).base");
+runTestShouldBe("(new (class A { constructor() { this.base = A; } })).base.toString()", '"class A { constructor() { this.base = A; } }"');
+runTestShouldNotThrow("class A {}; (class B extends A {})");
+runTestShouldThrow("class A {}; (class B extends A {}); B");
+runTestShouldNotThrow("class A {}; new (class B extends A {})");
+runTestShouldNotThrow("class A {}; new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } })");
+runTestShouldBeTrue("class A {}; (new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } })) instanceof A");
+runTestShouldBe("class A { constructor() {} }; (new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } })).base.toString()", "'class A { constructor() {} }'");
+runTestShouldBe("class A { constructor() {} }; (new (class B extends A { constructor() { super(); this.base = A; this.derived = B; } })).derived.toString()", "'class B extends A { constructor() { super(); this.base = A; this.derived = B; } }'");
+
+// Assignment of a class expression to a variable. Variable name available in scope, class name is not. Class name is available inside class scope.
+debug(''); debug('Class expression assignment to variable');
+runTestShouldThrow("A");
+runTestShouldNotThrow("var VarA = class {}");
+runTestShouldBe("var VarA = class { constructor() {} }; VarA.toString()", "'class { constructor() {} }'");
+runTestShouldThrow("VarA");
+runTestShouldNotThrow("var VarA = class A { constructor() {} }");
+runTestShouldBe("var VarA = class A { constructor() {} }; VarA.toString()", "'class A { constructor() {} }'");
+runTestShouldThrow("var VarA = class A { constructor() {} }; A.toString()");
+runTestShouldBeTrue("var VarA = class A { constructor() {} }; (new VarA) instanceof VarA");
+runTestShouldBe("var VarA = class A { constructor() { this.base = A; } }; (new VarA).base.toString()", "'class A { constructor() { this.base = A; } }'");
+runTestShouldNotThrow("var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() {} };");
+runTestShouldThrow("var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() {} }; B");
+runTestShouldBe("var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() {} }; VarB.toString()", "'class B extends VarA { constructor() {} }'");
+runTestShouldBeTrue("var VarA = class A { constructor() {} }; var VarB = class B extends VarA { }; (new VarB) instanceof VarA");
+runTestShouldBeTrue("var VarA = class A { constructor() {} }; var VarB = class B extends VarA { }; (new VarB) instanceof VarB");
+runTestShouldBeTrue("var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() { super(); this.base = VarA; this.derived = B; this.derivedVar = VarB; } }; (new VarB).base === VarA");
+runTestShouldBeTrue("var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() { super(); this.base = VarA; this.derived = B; this.derivedVar = VarB; } }; (new VarB).derived === VarB");
+runTestShouldBeTrue("var VarA = class A { constructor() {} }; var VarB = class B extends VarA { constructor() { super(); this.base = VarA; this.derived = B; this.derivedVar = VarB; } }; (new VarB).derivedVar === VarB");
+
+// FIXME: Class statement binding should be like `let`, not `var`.
+debug(''); debug('Class statement binding in other circumstances');
+runTestShouldThrow("var result = A; result");
+runTestShouldThrow("var result = A; class A {}; result");
+runTestShouldThrow("class A { constructor() { A = 1; } }; new A");
+runTestShouldBe("class A { constructor() { } }; A = 1; A", "1");
+runTestShouldNotThrow("class A {}; var result = A; result");
+shouldBe("eval('var Foo = 10'); Foo", "10");
+shouldThrow("'use strict'; eval('var Foo = 10'); Foo");
+shouldBe("eval('class Bar { constructor() {} }'); Bar.toString()", "'class Bar { constructor() {} }'");
+shouldThrow("'use strict'; eval('class Bar { constructor() {} }'); Bar.toString()");
diff --git a/deps/v8/test/webkit/class-syntax-prototype-expected.txt b/deps/v8/test/webkit/class-syntax-prototype-expected.txt
new file mode 100644
index 0000000000..31a0a79144
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-prototype-expected.txt
@@ -0,0 +1,50 @@
+Tests for the descriptors of the properties implicitly defined by ES6 class syntax
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS class A {}; descriptor(A, "prototype").writable is false
+PASS class A {}; var x = A.prototype; A.prototype = 3; A.prototype is x
+PASS class A {}; descriptor(A, "prototype").enumerable is false
+PASS class A {}; A.foo = "foo"; enumeratedProperties(A).includes("foo") is true
+PASS class A {}; enumeratedProperties(A).includes("prototype") is false
+PASS class A {}; descriptor(A, "prototype").configurable is false
+PASS class A {}; Object.defineProperty(A, "prototype", {value: "foo"}) threw exception TypeError: Cannot redefine property: prototype.
+PASS class A { static foo() {} }; descriptor(A, "foo").writable is true
+PASS class A { static foo() {} }; A.foo = 3; A.foo is 3
+PASS class A { static foo() {} }; descriptor(A, "foo").enumerable is false
+PASS class A { static foo() {} }; enumeratedProperties(A).includes("foo") is false
+PASS class A { static foo() {} }; descriptor(A, "foo").configurable is true
+PASS class A { static foo() {} }; Object.defineProperty(A, "foo", {value: "bar"}); A.foo is "bar"
+PASS class A { static get foo() {} }; descriptor(A, "foo").writable is undefined
+PASS class A { static get foo() { return 5; } }; A.foo = 3; A.foo is 5
+PASS class A { static get foo() {} }; descriptor(A, "foo").enumerable is false
+PASS class A { static get foo() {} }; enumeratedProperties(A).includes("foo") is false
+PASS class A { static get foo() {} }; enumeratedProperties(new A).includes("foo") is false
+PASS class A { static get foo() {} }; descriptor(A, "foo").configurable is true
+PASS class A { static get foo() {} }; Object.defineProperty(A, "foo", {value: "bar"}); A.foo is "bar"
+PASS class A { foo() {} }; descriptor(A.prototype, "foo").writable is true
+PASS class A { foo() {} }; A.prototype.foo = 3; A.prototype.foo is 3
+PASS class A { foo() {} }; descriptor(A.prototype, "foo").enumerable is false
+PASS class A { foo() {} }; enumeratedProperties(A.prototype).includes("foo") is false
+PASS class A { foo() {} }; enumeratedProperties(new A).includes("foo") is false
+PASS class A { foo() {} }; descriptor(A.prototype, "foo").configurable is true
+PASS class A { foo() {} }; Object.defineProperty(A.prototype, "foo", {value: "bar"}); A.prototype.foo is "bar"
+PASS class A { get foo() {} }; descriptor(A.prototype, "foo").writable is undefined
+PASS class A { get foo() { return 5; } }; A.prototype.foo = 3; A.prototype.foo is 5
+PASS class A { get foo() {} }; descriptor(A.prototype, "foo").enumerable is false
+PASS class A { get foo() {} }; enumeratedProperties(A.prototype).includes("foo") is false
+PASS class A { get foo() {} }; enumeratedProperties(new A).includes("foo") is false
+PASS class A { get foo() {} }; descriptor(A.prototype, "foo").configurable is true
+PASS class A { get foo() {} }; Object.defineProperty(A.prototype, "foo", {value: "bar"}); A.prototype.foo is "bar"
+PASS class A { }; descriptor(A.prototype, "constructor").writable is true
+PASS class A { }; A.prototype.constructor = 3; A.prototype.constructor is 3
+PASS class A { }; x = {}; A.prototype.constructor = function () { return x; }; (new A) instanceof A is true
+PASS class A { }; descriptor(A.prototype, "constructor").enumerable is false
+PASS class A { }; enumeratedProperties(A.prototype).includes("constructor") is false
+PASS class A { }; enumeratedProperties(new A).includes("constructor") is false
+PASS class A { }; descriptor(A.prototype, "constructor").configurable is true
+PASS class A { }; Object.defineProperty(A.prototype, "constructor", {value: "bar"}); A.prototype.constructor is "bar"
+PASS successfullyParsed is true
+
+TEST COMPLETE
diff --git a/deps/v8/test/webkit/class-syntax-prototype.js b/deps/v8/test/webkit/class-syntax-prototype.js
new file mode 100644
index 0000000000..02ec578bb4
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-prototype.js
@@ -0,0 +1,91 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-sloppy
+
+description('Tests for the descriptors of the properties implicitly defined by ES6 class syntax');
+
+function descriptor(object, propertyName) {
+    return Object.getOwnPropertyDescriptor(object, propertyName);
+}
+
+function enumeratedProperties(object) {
+    var properties = [];
+    for (var propertyName in object)
+        properties.push(propertyName);
+    return properties;
+}
+
+Array.prototype.includes = function(element) {
+  return this.indexOf(element) !== -1;
+};
+
+shouldBeFalse('class A {}; descriptor(A, "prototype").writable');
+shouldBe('class A {}; var x = A.prototype; A.prototype = 3; A.prototype', 'x');
+shouldBeFalse('class A {}; descriptor(A, "prototype").enumerable');
+shouldBeTrue('class A {}; A.foo = "foo"; enumeratedProperties(A).includes("foo")');
+shouldBeFalse('class A {}; enumeratedProperties(A).includes("prototype")');
+shouldBeFalse('class A {}; descriptor(A, "prototype").configurable');
+shouldThrow('class A {}; Object.defineProperty(A, "prototype", {value: "foo"})', '"TypeError: Cannot redefine property: prototype"');
+
+shouldBeTrue('class A { static foo() {} }; descriptor(A, "foo").writable');
+shouldBe('class A { static foo() {} }; A.foo = 3; A.foo', '3');
+shouldBeFalse('class A { static foo() {} }; descriptor(A, "foo").enumerable');
+shouldBeFalse('class A { static foo() {} }; enumeratedProperties(A).includes("foo")');
+shouldBeTrue('class A { static foo() {} }; descriptor(A, "foo").configurable');
+shouldBe('class A { static foo() {} }; Object.defineProperty(A, "foo", {value: "bar"}); A.foo', '"bar"');
+
+shouldBe('class A { static get foo() {} }; descriptor(A, "foo").writable', 'undefined');
+shouldBe('class A { static get foo() { return 5; } }; A.foo = 3; A.foo', '5');
+shouldBeFalse('class A { static get foo() {} }; descriptor(A, "foo").enumerable');
+shouldBeFalse('class A { static get foo() {} }; enumeratedProperties(A).includes("foo")');
+shouldBeFalse('class A { static get foo() {} }; enumeratedProperties(new A).includes("foo")');
+shouldBeTrue('class A { static get foo() {} }; descriptor(A, "foo").configurable');
+shouldBe('class A { static get foo() {} }; Object.defineProperty(A, "foo", {value: "bar"}); A.foo', '"bar"');
+
+shouldBeTrue('class A { foo() {} }; descriptor(A.prototype, "foo").writable');
+shouldBe('class A { foo() {} }; A.prototype.foo = 3; A.prototype.foo', '3');
+shouldBeFalse('class A { foo() {} }; descriptor(A.prototype, "foo").enumerable');
+shouldBeFalse('class A { foo() {} }; enumeratedProperties(A.prototype).includes("foo")');
+shouldBeFalse('class A { foo() {} }; enumeratedProperties(new A).includes("foo")');
+shouldBeTrue('class A { foo() {} }; descriptor(A.prototype, "foo").configurable');
+shouldBe('class A { foo() {} }; Object.defineProperty(A.prototype, "foo", {value: "bar"}); A.prototype.foo', '"bar"');
+
+shouldBe('class A { get foo() {} }; descriptor(A.prototype, "foo").writable', 'undefined');
+shouldBe('class A { get foo() { return 5; } }; A.prototype.foo = 3; A.prototype.foo', '5');
+shouldBeFalse('class A { get foo() {} }; descriptor(A.prototype, "foo").enumerable');
+shouldBeFalse('class A { get foo() {} }; enumeratedProperties(A.prototype).includes("foo")');
+shouldBeFalse('class A { get foo() {} }; enumeratedProperties(new A).includes("foo")');
+shouldBeTrue('class A { get foo() {} }; descriptor(A.prototype, "foo").configurable');
+shouldBe('class A { get foo() {} }; Object.defineProperty(A.prototype, "foo", {value: "bar"}); A.prototype.foo', '"bar"');
+
+shouldBeTrue('class A { }; descriptor(A.prototype, "constructor").writable');
+shouldBe('class A { }; A.prototype.constructor = 3; A.prototype.constructor', '3');
+shouldBeTrue('class A { }; x = {}; A.prototype.constructor = function () { return x; }; (new A) instanceof A');
+shouldBeFalse('class A { }; descriptor(A.prototype, "constructor").enumerable');
+shouldBeFalse('class A { }; enumeratedProperties(A.prototype).includes("constructor")');
+shouldBeFalse('class A { }; enumeratedProperties(new A).includes("constructor")');
+shouldBeTrue('class A { }; descriptor(A.prototype, "constructor").configurable');
+shouldBe('class A { }; Object.defineProperty(A.prototype, "constructor", {value: "bar"}); A.prototype.constructor', '"bar"');
+
+var successfullyParsed = true;
diff --git a/deps/v8/test/webkit/class-syntax-scoping-expected.txt b/deps/v8/test/webkit/class-syntax-scoping-expected.txt
new file mode 100644
index 0000000000..1a8dd35f20
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-scoping-expected.txt
@@ -0,0 +1,10 @@
+Tests for scoping of variables in ES6 class syntax
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS test() is "PASS"
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
diff --git a/deps/v8/test/webkit/class-syntax-scoping.js b/deps/v8/test/webkit/class-syntax-scoping.js
new file mode 100644
index 0000000000..02f5a1ee04
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-scoping.js
@@ -0,0 +1,39 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-sloppy
+
+description('Tests for scoping of variables in ES6 class syntax');
+
+var local = "FAIL";
+function test() {
+    var local = "PASS";
+    class A {
+        getLocal(x) { return local; }
+    };
+    return new A().getLocal();
+}
+
+shouldBe('test()', '"PASS"');
+
+var successfullyParsed = true;
diff --git a/deps/v8/test/webkit/class-syntax-semicolon-expected.txt b/deps/v8/test/webkit/class-syntax-semicolon-expected.txt
new file mode 100644
index 0000000000..488054a582
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-semicolon-expected.txt
@@ -0,0 +1,65 @@
+Tests for ES6 class syntax containing semicolon in the class body
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS class A { foo;() { } } threw exception SyntaxError: Unexpected token ;.
+PASS class A { foo() ; { } } threw exception SyntaxError: Unexpected token ;.
+PASS class A { get ; foo() { } } threw exception SyntaxError: Unexpected token ;.
+PASS class A { get foo;() { } } threw exception SyntaxError: Unexpected token ;.
+PASS class A { get foo() ; { } } threw exception SyntaxError: Unexpected token ;.
+PASS class A { set ; foo(x) { } } threw exception SyntaxError: Unexpected token ;.
+PASS class A { set foo;(x) { } } threw exception SyntaxError: Unexpected token ;.
+PASS class A { set foo(x) ; { } } threw exception SyntaxError: Unexpected token ;.
+PASS class A { ; } did not throw exception.
+PASS class A { foo() { } ; } did not throw exception.
+PASS class A { get foo() { } ; } did not throw exception.
+PASS class A { set foo(x) { } ; } did not throw exception.
+PASS class A { static foo() { } ; } did not throw exception.
+PASS class A { static get foo() { } ; } did not throw exception.
+PASS class A { static set foo(x) { } ; } did not throw exception.
+PASS class A { ; foo() { } } did not throw exception.
+PASS class A { ; get foo() { } } did not throw exception.
+PASS class A { ; set foo(x) { } } did not throw exception.
+PASS class A { ; static foo() { } } did not throw exception.
+PASS class A { ; static get foo() { } } did not throw exception.
+PASS class A { ; static set foo(x) { } } did not throw exception.
+PASS class A { foo() { } ; foo() {} } did not throw exception.
+PASS class A { foo() { } ; get foo() {} } did not throw exception.
+PASS class A { foo() { } ; set foo(x) {} } did not throw exception.
+PASS class A { foo() { } ; static foo() {} } did not throw exception.
+PASS class A { foo() { } ; static get foo() {} } did not throw exception.
+PASS class A { foo() { } ; static set foo(x) {} } did not throw exception.
+PASS class A { get foo() { } ; foo() {} } did not throw exception.
+PASS class A { get foo() { } ; get foo() {} } did not throw exception.
+PASS class A { get foo() { } ; set foo(x) {} } did not throw exception.
+PASS class A { get foo() { } ; static foo() {} } did not throw exception.
+PASS class A { get foo() { } ; static get foo() {} } did not throw exception.
+PASS class A { get foo() { } ; static set foo(x) {} } did not throw exception.
+PASS class A { set foo(x) { } ; foo() {} } did not throw exception.
+PASS class A { set foo(x) { } ; get foo() {} } did not throw exception.
+PASS class A { set foo(x) { } ; set foo(x) {} } did not throw exception.
+PASS class A { set foo(x) { } ; static foo() {} } did not throw exception.
+PASS class A { set foo(x) { } ; static get foo() {} } did not throw exception.
+PASS class A { set foo(x) { } ; static set foo(x) {} } did not throw exception.
+PASS class A { static foo() { } ; foo() {} } did not throw exception.
+PASS class A { static foo() { } ; get foo() {} } did not throw exception.
+PASS class A { static foo() { } ; set foo(x) {} } did not throw exception.
+PASS class A { static foo() { } ; static foo() {} } did not throw exception.
+PASS class A { static foo() { } ; static get foo() {} } did not throw exception.
+PASS class A { static foo() { } ; static set foo(x) {} } did not throw exception.
+PASS class A { static get foo() { } ; foo() {} } did not throw exception.
+PASS class A { static get foo() { } ; get foo() {} } did not throw exception.
+PASS class A { static get foo() { } ; set foo(x) {} } did not throw exception.
+PASS class A { static get foo() { } ; static foo() {} } did not throw exception.
+PASS class A { static get foo() { } ; static get foo() {} } did not throw exception.
+PASS class A { static get foo() { } ; static set foo(x) {} } did not throw exception.
+PASS class A { static set foo(x) { } ; foo() {} } did not throw exception.
+PASS class A { static set foo(x) { } ; get foo() {} } did not throw exception.
+PASS class A { static set foo(x) { } ; set foo(x) {} } did not throw exception.
+PASS class A { static set foo(x) { } ; static foo() {} } did not throw exception.
+PASS class A { static set foo(x) { } ; static get foo() {} } did not throw exception.
+PASS class A { static set foo(x) { } ; static set foo(x) {} } did not throw exception.
+PASS successfullyParsed is true
+
+TEST COMPLETE
diff --git a/deps/v8/test/webkit/class-syntax-semicolon.js b/deps/v8/test/webkit/class-syntax-semicolon.js
new file mode 100644
index 0000000000..33504f95d4
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-semicolon.js
@@ -0,0 +1,94 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-sloppy
+
+description('Tests for ES6 class syntax containing semicolon in the class body');
+
+shouldThrow("class A { foo;() { } }", "'SyntaxError: Unexpected token ;'");
+shouldThrow("class A { foo() ; { } }", "'SyntaxError: Unexpected token ;'");
+shouldThrow("class A { get ; foo() { } }", "'SyntaxError: Unexpected token ;'");
+shouldThrow("class A { get foo;() { } }", "'SyntaxError: Unexpected token ;'");
+shouldThrow("class A { get foo() ; { } }", "'SyntaxError: Unexpected token ;'");
+shouldThrow("class A { set ; foo(x) { } }", "'SyntaxError: Unexpected token ;'");
+shouldThrow("class A { set foo;(x) { } }", "'SyntaxError: Unexpected token ;'");
+shouldThrow("class A { set foo(x) ; { } }", "'SyntaxError: Unexpected token ;'");
+
+shouldNotThrow("class A { ; }");
+shouldNotThrow("class A { foo() { } ; }");
+shouldNotThrow("class A { get foo() { } ; }");
+shouldNotThrow("class A { set foo(x) { } ; }");
+shouldNotThrow("class A { static foo() { } ; }");
+shouldNotThrow("class A { static get foo() { } ; }");
+shouldNotThrow("class A { static set foo(x) { } ; }");
+
+shouldNotThrow("class A { ; foo() { } }");
+shouldNotThrow("class A { ; get foo() { } }");
+shouldNotThrow("class A { ; set foo(x) { } }");
+shouldNotThrow("class A { ; static foo() { } }");
+shouldNotThrow("class A { ; static get foo() { } }");
+shouldNotThrow("class A { ; static set foo(x) { } }");
+
+shouldNotThrow("class A { foo() { } ; foo() {} }");
+shouldNotThrow("class A { foo() { } ; get foo() {} }");
+shouldNotThrow("class A { foo() { } ; set foo(x) {} }");
+shouldNotThrow("class A { foo() { } ; static foo() {} }");
+shouldNotThrow("class A { foo() { } ; static get foo() {} }");
+shouldNotThrow("class A { foo() { } ; static set foo(x) {} }");
+
+shouldNotThrow("class A { get foo() { } ; foo() {} }");
+shouldNotThrow("class A { get foo() { } ; get foo() {} }");
+shouldNotThrow("class A { get foo() { } ; set foo(x) {} }");
+shouldNotThrow("class A { get foo() { } ; static foo() {} }");
+shouldNotThrow("class A { get foo() { } ; static get foo() {} }");
+shouldNotThrow("class A { get foo() { } ; static set foo(x) {} }");
+
+shouldNotThrow("class A { set foo(x) { } ; foo() {} }");
+shouldNotThrow("class A { set foo(x) { } ; get foo() {} }");
+shouldNotThrow("class A { set foo(x) { } ; set foo(x) {} }");
+shouldNotThrow("class A { set foo(x) { } ; static foo() {} }");
+shouldNotThrow("class A { set foo(x) { } ; static get foo() {} }");
+shouldNotThrow("class A { set foo(x) { } ; static set foo(x) {} }");
+
+shouldNotThrow("class A { static foo() { } ; foo() {} }");
+shouldNotThrow("class A { static foo() { } ; get foo() {} }");
+shouldNotThrow("class A { static foo() { } ; set foo(x) {} }");
+shouldNotThrow("class A { static foo() { } ; static foo() {} }");
+shouldNotThrow("class A { static foo() { } ; static get foo() {} }");
+shouldNotThrow("class A { static foo() { } ; static set foo(x) {} }");
+
+shouldNotThrow("class A { static get foo() { } ; foo() {} }");
+shouldNotThrow("class A { static get foo() { } ; get foo() {} }");
+shouldNotThrow("class A { static get foo() { } ; set foo(x) {} }");
+shouldNotThrow("class A { static get foo() { } ; static foo() {} }");
+shouldNotThrow("class A { static get foo() { } ; static get foo() {} }");
+shouldNotThrow("class A { static get foo() { } ; static set foo(x) {} }");
+
+shouldNotThrow("class A { static set foo(x) { } ; foo() {} }");
+shouldNotThrow("class A { static set foo(x) { } ; get foo() {} }");
+shouldNotThrow("class A { static set foo(x) { } ; set foo(x) {} }");
+shouldNotThrow("class A { static set foo(x) { } ; static foo() {} }");
+shouldNotThrow("class A { static set foo(x) { } ; static get foo() {} }");
+shouldNotThrow("class A { static set foo(x) { } ; static set foo(x) {} }");
+
+var successfullyParsed = true;
diff --git a/deps/v8/test/webkit/class-syntax-super-expected.txt b/deps/v8/test/webkit/class-syntax-super-expected.txt
new file mode 100644
index 0000000000..2f38f5ae38
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-super-expected.txt
@@ -0,0 +1,46 @@
+Tests for ES6 class syntax "super"
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS (new Base) instanceof Base is true
+PASS (new Derived) instanceof Derived is true
+PASS (new Derived).callBaseMethod() is baseMethodValue
+PASS x = (new Derived).callBaseMethod; x() is baseMethodValue
+PASS (new Derived).callBaseMethodInGetter is baseMethodValue
+PASS (new Derived).callBaseMethodInSetter = 1; valueInSetter is baseMethodValue
+PASS (new Derived).baseMethodInGetterSetter is (new Base).baseMethod
+PASS (new Derived).baseMethodInGetterSetter = 1; valueInSetter is (new Base).baseMethod
+PASS Derived.staticMethod() is "base3"
+PASS (new SecondDerived).chainMethod() is ["base", "derived", "secondDerived"]
+PASS x = class extends Base { constructor() { super(); } super() {} } did not throw exception.
+PASS x = class extends Base { constructor() { super(); } method() { super() } } threw exception SyntaxError: 'super' keyword unexpected here.
+PASS x = class extends Base { constructor() { super(); } method() { super } } threw exception SyntaxError: 'super' keyword unexpected here.
+PASS x = class extends Base { constructor() { super(); } method() { return new super } } threw exception SyntaxError: 'super' keyword unexpected here.
+PASS x = class extends Base { constructor() { super(); } method1() { delete (super.foo) } method2() { delete super["foo"] } } did not throw exception.
+PASS (new x).method1() threw exception ReferenceError: Unsupported reference to 'super'.
+PASS (new x).method2() threw exception ReferenceError: Unsupported reference to 'super'.
+PASS new (class { constructor() { return undefined; } }) instanceof Object is true
+PASS new (class { constructor() { return 1; } }) instanceof Object is true
+PASS new (class extends Base { constructor() { return undefined } }) threw exception ReferenceError: this is not defined.
+PASS new (class extends Base { constructor() { super(); return undefined } }) instanceof Object is true
+PASS x = { }; new (class extends Base { constructor() { return x } }); is x
+PASS x instanceof Base is false
+PASS new (class extends Base { constructor() { } }) threw exception ReferenceError: this is not defined.
+PASS new (class extends Base { constructor() { return 1; } }) threw exception TypeError: Derived constructors may only return object or undefined.
+PASS new (class extends null { constructor() { return undefined } }) threw exception ReferenceError: this is not defined.
+PASS new (class extends null { constructor() { super(); return undefined } }) threw exception TypeError: function () {} is not a constructor.
+PASS x = { }; new (class extends null { constructor() { return x } }); is x
+PASS x instanceof Object is true
+PASS new (class extends null { constructor() { } }) threw exception ReferenceError: this is not defined.
+PASS new (class extends null { constructor() { return 1; } }) threw exception TypeError: Derived constructors may only return object or undefined.
+PASS new (class extends null { constructor() { super() } }) threw exception TypeError: function () {} is not a constructor.
+PASS new (class { constructor() { super() } }) threw exception SyntaxError: 'super' keyword unexpected here.
+PASS function x() { super(); } threw exception SyntaxError: 'super' keyword unexpected here.
+PASS new (class extends Object { constructor() { function x() { super() } } }) threw exception SyntaxError: 'super' keyword unexpected here.
+PASS new (class extends Object { constructor() { function x() { super.method } } }) threw exception SyntaxError: 'super' keyword unexpected here.
+PASS function x() { super.method(); } threw exception SyntaxError: 'super' keyword unexpected here.
+PASS function x() { super(); } threw exception SyntaxError: 'super' keyword unexpected here.
+PASS successfullyParsed is true
+
+TEST COMPLETE
diff --git a/deps/v8/test/webkit/class-syntax-super.js b/deps/v8/test/webkit/class-syntax-super.js
new file mode 100644
index 0000000000..8625831de5
--- /dev/null
+++ b/deps/v8/test/webkit/class-syntax-super.js
@@ -0,0 +1,96 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --harmony-sloppy
+
+description('Tests for ES6 class syntax "super"');
+
+var baseMethodValue = {};
+var valueInSetter = null;
+
+class Base {
+    constructor() { }
+    baseMethod() { return baseMethodValue; }
+    chainMethod() { return 'base'; }
+    static staticMethod() { return 'base3'; }
+}
+
+class Derived extends Base {
+    constructor() { super(); }
+    chainMethod() { return [super.chainMethod(), 'derived']; }
+    callBaseMethod() { return super.baseMethod(); }
+    get callBaseMethodInGetter() { return super['baseMethod'](); }
+    set callBaseMethodInSetter(x) { valueInSetter = super.baseMethod(); }
+    get baseMethodInGetterSetter() { return super.baseMethod; }
+    set baseMethodInGetterSetter(x) { valueInSetter = super['baseMethod']; }
+    static staticMethod() { return super.staticMethod(); }
+}
+
+class SecondDerived extends Derived {
+    constructor() { super(); }
+    chainMethod() { return super.chainMethod().concat(['secondDerived']); }
+}
+
+shouldBeTrue('(new Base) instanceof Base');
+shouldBeTrue('(new Derived) instanceof Derived');
+shouldBe('(new Derived).callBaseMethod()', 'baseMethodValue');
+shouldBe('x = (new Derived).callBaseMethod; x()', 'baseMethodValue');
+shouldBe('(new Derived).callBaseMethodInGetter', 'baseMethodValue');
+shouldBe('(new Derived).callBaseMethodInSetter = 1; valueInSetter', 'baseMethodValue');
+shouldBe('(new Derived).baseMethodInGetterSetter', '(new Base).baseMethod');
+shouldBe('(new Derived).baseMethodInGetterSetter = 1; valueInSetter', '(new Base).baseMethod');
+shouldBe('Derived.staticMethod()', '"base3"');
+shouldBe('(new SecondDerived).chainMethod()', '["base", "derived", "secondDerived"]');
+shouldNotThrow('x = class extends Base { constructor() { super(); } super() {} }');
+shouldThrow('x = class extends Base { constructor() { super(); } method() { super() } }',
+    '"SyntaxError: \'super\' keyword unexpected here"');
+shouldThrow('x = class extends Base { constructor() { super(); } method() { super } }', '"SyntaxError: \'super\' keyword unexpected here"');
+shouldThrow('x = class extends Base { constructor() { super(); } method() { return new super } }', '"SyntaxError: \'super\' keyword unexpected here"');
+// shouldBeTrue('(new x).method() instanceof Base');
+// shouldBeFalse('(new x).method() instanceof x');
+shouldNotThrow('x = class extends Base { constructor() { super(); } method1() { delete (super.foo) } method2() { delete super["foo"] } }');
+shouldThrow('(new x).method1()', '"ReferenceError: Unsupported reference to \'super\'"');
+shouldThrow('(new x).method2()', '"ReferenceError: Unsupported reference to \'super\'"');
+shouldBeTrue('new (class { constructor() { return undefined; } }) instanceof Object');
+shouldBeTrue('new (class { constructor() { return 1; } }) instanceof Object');
+shouldThrow('new (class extends Base { constructor() { return undefined } })');
+shouldBeTrue('new (class extends Base { constructor() { super(); return undefined } }) instanceof Object');
+shouldBe('x = { }; new (class extends Base { constructor() { return x } });', 'x');
+shouldBeFalse('x instanceof Base');
+shouldThrow('new (class extends Base { constructor() { } })', '"ReferenceError: this is not defined"');
+shouldThrow('new (class extends Base { constructor() { return 1; } })', '"TypeError: Derived constructors may only return object or undefined"');
+shouldThrow('new (class extends null { constructor() { return undefined } })');
+shouldThrow('new (class extends null { constructor() { super(); return undefined } })', '"TypeError: function () {} is not a constructor"');
+shouldBe('x = { }; new (class extends null { constructor() { return x } });', 'x');
+shouldBeTrue('x instanceof Object');
+shouldThrow('new (class extends null { constructor() { } })', '"ReferenceError: this is not defined"');
+shouldThrow('new (class extends null { constructor() { return 1; } })', '"TypeError: Derived constructors may only return object or undefined"');
+shouldThrow('new (class extends null { constructor() { super() } })', '"TypeError: function () {} is not a constructor"');
+shouldThrow('new (class { constructor() { super() } })', '"SyntaxError: \'super\' keyword unexpected here"');
+shouldThrow('function x() { super(); }', '"SyntaxError: \'super\' keyword unexpected here"');
+shouldThrow('new (class extends Object { constructor() { function x() { super() } } })', '"SyntaxError: \'super\' keyword unexpected here"');
+shouldThrow('new (class extends Object { constructor() { function x() { super.method } } })', '"SyntaxError: \'super\' keyword unexpected here"');
+shouldThrow('function x() { super.method(); }', '"SyntaxError: \'super\' keyword unexpected here"');
+shouldThrow('function x() { super(); }', '"SyntaxError: \'super\' keyword unexpected here"');
+
+var successfullyParsed = true;
diff --git a/deps/v8/test/webkit/fast/js/Object-getOwnPropertyNames-expected.txt b/deps/v8/test/webkit/fast/js/Object-getOwnPropertyNames-expected.txt
index 0e00f23cad..1948700fca 100644
--- a/deps/v8/test/webkit/fast/js/Object-getOwnPropertyNames-expected.txt
+++ b/deps/v8/test/webkit/fast/js/Object-getOwnPropertyNames-expected.txt
@@ -38,12 +38,12 @@ PASS getSortedOwnPropertyNames(parseInt) is ['arguments', 'caller', 'length', 'n
 PASS getSortedOwnPropertyNames(parseFloat) is ['arguments', 'caller', 'length', 'name']
 PASS getSortedOwnPropertyNames(isNaN) is ['arguments', 'caller', 'length', 'name']
 PASS getSortedOwnPropertyNames(isFinite) is ['arguments', 'caller', 'length', 'name']
-PASS getSortedOwnPropertyNames(escape) is ['arguments', 'caller', 'length', 'name']
-PASS getSortedOwnPropertyNames(unescape) is ['arguments', 'caller', 'length', 'name']
-PASS getSortedOwnPropertyNames(decodeURI) is ['arguments', 'caller', 'length', 'name']
-PASS getSortedOwnPropertyNames(decodeURIComponent) is ['arguments', 'caller', 'length', 'name']
-PASS getSortedOwnPropertyNames(encodeURI) is ['arguments', 'caller', 'length', 'name']
-PASS getSortedOwnPropertyNames(encodeURIComponent) is ['arguments', 'caller', 'length', 'name']
+PASS getSortedOwnPropertyNames(escape) is ['length', 'name']
+PASS getSortedOwnPropertyNames(unescape) is ['length', 'name']
+PASS getSortedOwnPropertyNames(decodeURI) is ['length', 'name']
+PASS getSortedOwnPropertyNames(decodeURIComponent) is ['length', 'name']
+PASS getSortedOwnPropertyNames(encodeURI) is ['length', 'name']
+PASS getSortedOwnPropertyNames(encodeURIComponent) is ['length', 'name']
 PASS getSortedOwnPropertyNames(Object) is ['arguments', 'caller', 'create', 'defineProperties', 'defineProperty', 'deliverChangeRecords', 'freeze', 'getNotifier', 'getOwnPropertyDescriptor', 'getOwnPropertyNames', 'getOwnPropertySymbols', 'getPrototypeOf', 'is', 'isExtensible', 'isFrozen', 'isSealed', 'keys', 'length', 'name', 'observe', 'preventExtensions', 'prototype', 'seal', 'setPrototypeOf', 'unobserve']
 PASS getSortedOwnPropertyNames(Object.prototype) is ['__defineGetter__', '__defineSetter__', '__lookupGetter__', '__lookupSetter__', '__proto__', 'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'toLocaleString', 'toString', 'valueOf']
 PASS getSortedOwnPropertyNames(Function) is ['arguments', 'caller', 'length', 'name', 'prototype']
diff --git a/deps/v8/test/webkit/fast/js/Object-getOwnPropertyNames.js b/deps/v8/test/webkit/fast/js/Object-getOwnPropertyNames.js
index 72bd21b426..20e509ba96 100644
--- a/deps/v8/test/webkit/fast/js/Object-getOwnPropertyNames.js
+++ b/deps/v8/test/webkit/fast/js/Object-getOwnPropertyNames.js
@@ -64,12 +64,12 @@ var expectedPropertyNamesSet = {
     "parseFloat": "['arguments', 'caller', 'length', 'name']",
     "isNaN": "['arguments', 'caller', 'length', 'name']",
     "isFinite": "['arguments', 'caller', 'length', 'name']",
-    "escape": "['arguments', 'caller', 'length', 'name']",
-    "unescape": "['arguments', 'caller', 'length', 'name']",
-    "decodeURI": "['arguments', 'caller', 'length', 'name']",
-    "decodeURIComponent": "['arguments', 'caller', 'length', 'name']",
-    "encodeURI": "['arguments', 'caller', 'length', 'name']",
-    "encodeURIComponent": "['arguments', 'caller', 'length', 'name']",
+    "escape": "['length', 'name']",
+    "unescape": "['length', 'name']",
+    "decodeURI": "['length', 'name']",
+    "decodeURIComponent": "['length', 'name']",
+    "encodeURI": "['length', 'name']",
+    "encodeURIComponent": "['length', 'name']",
 // Built-in ECMA objects
     "Object": "['arguments', 'caller', 'create', 'defineProperties', 'defineProperty', 'deliverChangeRecords', 'freeze', 'getNotifier', 'getOwnPropertyDescriptor', 'getOwnPropertyNames', 'getOwnPropertySymbols', 'getPrototypeOf', 'is', 'isExtensible', 'isFrozen', 'isSealed', 'keys', 'length', 'name', 'observe', 'preventExtensions', 'prototype', 'seal', 'setPrototypeOf', 'unobserve']",
     "Object.prototype": "['__defineGetter__', '__defineSetter__', '__lookupGetter__', '__lookupSetter__', '__proto__', 'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'toLocaleString', 'toString', 'valueOf']",
diff --git a/deps/v8/test/webkit/fast/js/basic-strict-mode-expected.txt b/deps/v8/test/webkit/fast/js/basic-strict-mode-expected.txt
index 0e6228e161..1fcf0c1acb 100644
--- a/deps/v8/test/webkit/fast/js/basic-strict-mode-expected.txt
+++ b/deps/v8/test/webkit/fast/js/basic-strict-mode-expected.txt
@@ -81,20 +81,22 @@ PASS (function (){'use strict'; with(1){};}) threw exception SyntaxError: Strict
 PASS (function(){(function (){'use strict'; with(1){};})}) threw exception SyntaxError: Strict mode code may not include a with statement.
 PASS (function (){'use strict'; arguments.callee; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
 PASS (function (){'use strict'; arguments.caller; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-PASS (function f(){'use strict'; f.arguments; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-PASS (function f(){'use strict'; f.caller; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-PASS (function f(){'use strict'; f.arguments=5; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-PASS (function f(){'use strict'; f.caller=5; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
+PASS (function f(){'use strict'; f.arguments; })() threw exception TypeError: 'caller' and 'arguments' are restricted function properties and cannot be accessed in this context..
+PASS (function f(){'use strict'; f.caller; })() threw exception TypeError: 'caller' and 'arguments' are restricted function properties and cannot be accessed in this context..
+PASS (function f(){'use strict'; f.arguments=5; })() threw exception TypeError: 'caller' and 'arguments' are restricted function properties and cannot be accessed in this context..
+PASS (function f(){'use strict'; f.caller=5; })() threw exception TypeError: 'caller' and 'arguments' are restricted function properties and cannot be accessed in this context..
 PASS (function (arg){'use strict'; arguments.callee; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
 PASS (function (arg){'use strict'; arguments.caller; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-PASS (function f(arg){'use strict'; f.arguments; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-PASS (function f(arg){'use strict'; f.caller; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-PASS (function f(arg){'use strict'; f.arguments=5; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-PASS (function f(arg){'use strict'; f.caller=5; })() threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
+PASS (function f(arg){'use strict'; f.arguments; })() threw exception TypeError: 'caller' and 'arguments' are restricted function properties and cannot be accessed in this context..
+PASS (function f(arg){'use strict'; f.caller; })() threw exception TypeError: 'caller' and 'arguments' are restricted function properties and cannot be accessed in this context..
+PASS (function f(arg){'use strict'; f.arguments=5; })() threw exception TypeError: 'caller' and 'arguments' are restricted function properties and cannot be accessed in this context..
+PASS (function f(arg){'use strict'; f.caller=5; })() threw exception TypeError: 'caller' and 'arguments' are restricted function properties and cannot be accessed in this context..
 PASS "caller" in function(){"use strict"} is true
-PASS (function(){"use strict";}).hasOwnProperty("caller") is true
+PASS (function(){"use strict";}).hasOwnProperty("caller") is false
+PASS (function(){"use strict";}).__proto__.hasOwnProperty("caller") is true
 PASS "arguments" in function(){"use strict"} is true
-PASS (function(){"use strict";}).hasOwnProperty("arguments") is true
+PASS (function(){"use strict";}).hasOwnProperty("arguments") is false
+PASS (function(){"use strict";}).__proto__.hasOwnProperty("arguments") is true
 PASS 'use strict'; (function (){with(1){};}) threw exception SyntaxError: Strict mode code may not include a with statement.
 PASS (function(){'use strict'; (function (){with(1){};})}) threw exception SyntaxError: Strict mode code may not include a with statement.
 PASS 'use strict'; (function (){var a; delete a;}) threw exception SyntaxError: Delete of an unqualified identifier in strict mode..
@@ -195,14 +197,14 @@ PASS (function (a){'use strict'; var local; (function (){local;})(); arguments[0
 PASS (function (){'use strict';  var local; (function (){local;})(); arguments[0]=true; return arguments; })()[0] is true
 PASS 'use strict'; (function (){var a = true; eval('var a = false'); return a; })() is true
 PASS (function (){var a = true; eval('"use strict"; var a = false'); return a; })() is true
-PASS (function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(f, 'arguments').value; })() is undefined.
-PASS (function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(f, 'caller').value; })() is undefined.
+PASS (function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(f.__proto__, 'arguments').value; })() is undefined.
+PASS (function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(f.__proto__, 'caller').value; })() is undefined.
 PASS (function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(arguments, 'callee').value; })() is undefined.
 PASS (function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(arguments, 'caller').value; })() is undefined.
 PASS (function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(arguments, 'caller'); return descriptor.get === descriptor.set; })() is true
 PASS (function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(arguments, 'callee'); return descriptor.get === descriptor.set; })() is true
-PASS (function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(f, 'caller'); return descriptor.get === descriptor.set; })() is true
-PASS (function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(f, 'arguments'); return descriptor.get === descriptor.set; })() is true
+PASS (function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(f.__proto__, 'caller'); return descriptor.get === descriptor.set; })() is true
+PASS (function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(f.__proto__, 'arguments'); return descriptor.get === descriptor.set; })() is true
 PASS 'use strict'; (function f() { for(var i in this); })(); true; is true
 PASS 'use strict'̻ threw exception SyntaxError: Unexpected token ILLEGAL.
 PASS (function(){'use strict'̻}) threw exception SyntaxError: Unexpected token ILLEGAL.
@@ -228,7 +230,7 @@ PASS (function () {'use strict';  try { throw 1; } catch (e) { aGlobal = true; }
 PASS try { throw 1; } catch (e) { aGlobal = true; } is true
 PASS (function () { try { throw 1; } catch (e) { aGlobal = true; }})(); aGlobal; is true
 PASS (function () {try { throw 1; } catch (e) { aGlobal = true; }})(); aGlobal; is true
-FAIL String(Object.getOwnPropertyDescriptor(function() { "use strict"; }, "caller").get) should be function () {
+FAIL String(Object.getOwnPropertyDescriptor((function() { "use strict"; }).__proto__, "caller").get) should be function () {
     [native code]
 }. Was function ThrowTypeError() { [native code] }.
 PASS successfullyParsed is true
diff --git a/deps/v8/test/webkit/fast/js/basic-strict-mode.js b/deps/v8/test/webkit/fast/js/basic-strict-mode.js
index f34b14e7ae..1687b2e5e7 100644
--- a/deps/v8/test/webkit/fast/js/basic-strict-mode.js
+++ b/deps/v8/test/webkit/fast/js/basic-strict-mode.js
@@ -109,11 +109,13 @@ shouldThrow("(function f(arg){'use strict'; f.caller; })()");
 shouldThrow("(function f(arg){'use strict'; f.arguments=5; })()");
 shouldThrow("(function f(arg){'use strict'; f.caller=5; })()");
 
-// arguments/caller poisoning should be visible but not throw with 'in' & 'hasOwnProperty'.
+// arguments/caller poisoning should be visible on the intrinsic %FunctionPrototype%, but not throw with 'in' & 'hasOwnProperty'.
 shouldBeTrue('"caller" in function(){"use strict"}');
-shouldBeTrue('(function(){"use strict";}).hasOwnProperty("caller")');
+shouldBeFalse('(function(){"use strict";}).hasOwnProperty("caller")');
+shouldBeTrue('(function(){"use strict";}).__proto__.hasOwnProperty("caller")');
 shouldBeTrue('"arguments" in function(){"use strict"}');
-shouldBeTrue('(function(){"use strict";}).hasOwnProperty("arguments")');
+shouldBeFalse('(function(){"use strict";}).hasOwnProperty("arguments")');
+shouldBeTrue('(function(){"use strict";}).__proto__.hasOwnProperty("arguments")');
 
 shouldBeSyntaxError("'use strict'; (function (){with(1){};})");
 shouldBeSyntaxError("'use strict'; (function (){var a; delete a;})");
@@ -194,14 +196,14 @@ shouldBeTrue("(function (){'use strict';  var local; (function (){local;})(); ar
 shouldBeTrue("'use strict'; (function (){var a = true; eval('var a = false'); return a; })()");
 shouldBeTrue("(function (){var a = true; eval('\"use strict\"; var a = false'); return a; })()");
 
-shouldBeUndefined("(function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(f, 'arguments').value; })()");
-shouldBeUndefined("(function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(f, 'caller').value; })()");
+shouldBeUndefined("(function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(f.__proto__, 'arguments').value; })()");
+shouldBeUndefined("(function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(f.__proto__, 'caller').value; })()");
 shouldBeUndefined("(function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(arguments, 'callee').value; })()");
 shouldBeUndefined("(function f(arg){'use strict'; return Object.getOwnPropertyDescriptor(arguments, 'caller').value; })()");
 shouldBeTrue("(function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(arguments, 'caller'); return descriptor.get === descriptor.set; })()");
 shouldBeTrue("(function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(arguments, 'callee'); return descriptor.get === descriptor.set; })()");
-shouldBeTrue("(function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(f, 'caller'); return descriptor.get === descriptor.set; })()");
-shouldBeTrue("(function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(f, 'arguments'); return descriptor.get === descriptor.set; })()");
+shouldBeTrue("(function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(f.__proto__, 'caller'); return descriptor.get === descriptor.set; })()");
+shouldBeTrue("(function f(arg){'use strict'; var descriptor = Object.getOwnPropertyDescriptor(f.__proto__, 'arguments'); return descriptor.get === descriptor.set; })()");
 shouldBeTrue("'use strict'; (function f() { for(var i in this); })(); true;")
 
 shouldBeSyntaxError("'use strict'\u033b");
@@ -228,4 +230,4 @@ aGlobal = false;
 shouldBeTrue("(function () {try { throw 1; } catch (e) { aGlobal = true; }})(); aGlobal;");
 
 // Make sure this doesn't crash!
-shouldBe('String(Object.getOwnPropertyDescriptor(function() { "use strict"; }, "caller").get)', "'function () {\\n    [native code]\\n}'");
+shouldBe('String(Object.getOwnPropertyDescriptor((function() { "use strict"; }).__proto__, "caller").get)', "'function () {\\n    [native code]\\n}'");
diff --git a/deps/v8/test/webkit/fast/js/caller-property-expected.txt b/deps/v8/test/webkit/fast/js/caller-property-expected.txt
deleted file mode 100644
index a5d4dd2c14..0000000000
--- a/deps/v8/test/webkit/fast/js/caller-property-expected.txt
+++ /dev/null
@@ -1,51 +0,0 @@
-# Copyright 2013 the V8 project authors. All rights reserved.
-# Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1.  Redistributions of source code must retain the above copyright
-#     notice, this list of conditions and the following disclaimer.
-# 2.  Redistributions in binary form must reproduce the above copyright
-#     notice, this list of conditions and the following disclaimer in the
-#     documentation and/or other materials provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
-# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-# DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
-# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-This tests for caller property in functions. Only functions that are called from inside of other functions and have a parent should have this property set. Tests return true when caller is found and false when the caller is null.
-
-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-PASS childHasCallerWhenExecutingGlobalCode is false
-PASS childHasCallerWhenCalledWithoutParent is false
-PASS childHasCallerWhenCalledFromWithinParent is true
-PASS nonStrictCaller(nonStrictCallee) is nonStrictCaller
-FAIL nonStrictCaller(strictCallee) should throw TypeError: Type error. Threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-FAIL strictCaller(nonStrictCallee) should throw TypeError: Function.caller used to retrieve strict caller. Was null.
-FAIL strictCaller(strictCallee) should throw TypeError: Type error. Threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-PASS nonStrictCaller(boundNonStrictCallee) is nonStrictCaller
-FAIL nonStrictCaller(boundStrictCallee) should throw TypeError: Type error. Threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-FAIL strictCaller(boundNonStrictCallee) should throw TypeError: Function.caller used to retrieve strict caller. Was null.
-FAIL strictCaller(boundStrictCallee) should throw TypeError: Type error. Threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-PASS nonStrictGetter(nonStrictAccessor) is nonStrictGetter
-PASS nonStrictSetter(nonStrictAccessor) is true
-FAIL nonStrictGetter(strictAccessor) should throw TypeError: Type error. Threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-FAIL nonStrictSetter(strictAccessor) should throw TypeError: Type error. Threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-FAIL strictGetter(nonStrictAccessor) should throw TypeError: Function.caller used to retrieve strict caller. Was null.
-FAIL strictSetter(nonStrictAccessor) should throw TypeError: Function.caller used to retrieve strict caller. Was undefined.
-FAIL strictGetter(strictAccessor) should throw TypeError: Type error. Threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-FAIL strictSetter(strictAccessor) should throw TypeError: Type error. Threw exception TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them.
-PASS successfullyParsed is true
-
-TEST COMPLETE
-
diff --git a/deps/v8/test/webkit/fast/js/caller-property.js b/deps/v8/test/webkit/fast/js/caller-property.js
deleted file mode 100644
index d28ccf8c50..0000000000
--- a/deps/v8/test/webkit/fast/js/caller-property.js
+++ /dev/null
@@ -1,85 +0,0 @@
-// Copyright 2013 the V8 project authors. All rights reserved.
-// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions
-// are met:
-// 1.  Redistributions of source code must retain the above copyright
-//     notice, this list of conditions and the following disclaimer.
-// 2.  Redistributions in binary form must reproduce the above copyright
-//     notice, this list of conditions and the following disclaimer in the
-//     documentation and/or other materials provided with the distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
-// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
-// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-description(
-'This tests for caller property in functions. Only functions that are called from inside of other functions and have a parent should have this property set. Tests return true when caller is found and false when the caller is null.'
-)
-function child()
-{
-    return (child.caller !== null);
-}
-
-function parent()
-{
-    return child();
-}
-
-var childHasCallerWhenExecutingGlobalCode = (child.caller !== null);
-var childHasCallerWhenCalledWithoutParent = child();
-var childHasCallerWhenCalledFromWithinParent = parent();
-
-shouldBe('childHasCallerWhenExecutingGlobalCode', 'false');
-shouldBe('childHasCallerWhenCalledWithoutParent', 'false');
-shouldBe('childHasCallerWhenCalledFromWithinParent', 'true')
-
-// The caller property should throw in strict mode, and a non-strict function cannot use caller to reach a strict caller (see ES5.1 15.3.5.4).
-function nonStrictCallee() { return nonStrictCallee.caller; }
-function strictCallee() { "use strict"; return strictCallee.caller; }
-function nonStrictCaller(x) { return x(); }
-function strictCaller(x) { "use strict"; return x(); }
-shouldBe("nonStrictCaller(nonStrictCallee)", "nonStrictCaller");
-shouldThrow("nonStrictCaller(strictCallee)", '"TypeError: Type error"');
-shouldThrow("strictCaller(nonStrictCallee)", '"TypeError: Function.caller used to retrieve strict caller"');
-shouldThrow("strictCaller(strictCallee)", '"TypeError: Type error"');
-
-// .caller within a bound function reaches the caller, ignoring the binding.
-var boundNonStrictCallee = nonStrictCallee.bind();
-var boundStrictCallee = strictCallee.bind();
-shouldBe("nonStrictCaller(boundNonStrictCallee)", "nonStrictCaller");
-shouldThrow("nonStrictCaller(boundStrictCallee)", '"TypeError: Type error"');
-shouldThrow("strictCaller(boundNonStrictCallee)", '"TypeError: Function.caller used to retrieve strict caller"');
-shouldThrow("strictCaller(boundStrictCallee)", '"TypeError: Type error"');
-
-// Check that .caller works (or throws) as expected, over an accessor call.
-function getFooGetter(x) { return Object.getOwnPropertyDescriptor(x, 'foo').get; }
-function getFooSetter(x) { return Object.getOwnPropertyDescriptor(x, 'foo').set; }
-var nonStrictAccessor = {
-    get foo() { return getFooGetter(nonStrictAccessor).caller; },
-    set foo(x) { if (getFooSetter(nonStrictAccessor).caller !==x) throw false; }
-};
-var strictAccessor = {
-    get foo() { "use strict"; return getFooGetter(strictAccessor).caller; },
-    set foo(x) { "use strict"; if (getFooSetter(strictAccessor).caller !==x) throw false; }
-};
-function nonStrictGetter(x) { return x.foo; }
-function nonStrictSetter(x) { x.foo = nonStrictSetter; return true; }
-function strictGetter(x) { "use strict"; return x.foo; }
-function strictSetter(x) { "use strict"; x.foo = nonStrictSetter; return true; }
-shouldBe("nonStrictGetter(nonStrictAccessor)", "nonStrictGetter");
-shouldBeTrue("nonStrictSetter(nonStrictAccessor)");
-shouldThrow("nonStrictGetter(strictAccessor)", '"TypeError: Type error"');
-shouldThrow("nonStrictSetter(strictAccessor)", '"TypeError: Type error"');
-shouldThrow("strictGetter(nonStrictAccessor)", '"TypeError: Function.caller used to retrieve strict caller"');
-shouldThrow("strictSetter(nonStrictAccessor)", '"TypeError: Function.caller used to retrieve strict caller"');
-shouldThrow("strictGetter(strictAccessor)", '"TypeError: Type error"');
-shouldThrow("strictSetter(strictAccessor)", '"TypeError: Type error"');
diff --git a/deps/v8/test/webkit/prototypes-expected.txt b/deps/v8/test/webkit/prototypes-expected.txt
index c2c35b177c..935cd6222b 100644
--- a/deps/v8/test/webkit/prototypes-expected.txt
+++ b/deps/v8/test/webkit/prototypes-expected.txt
@@ -43,8 +43,8 @@ PASS Array.__proto__ is Object.__proto__
 PASS Date.__proto__ is Object.__proto__
 PASS Number.__proto__ is Object.__proto__
 PASS String.__proto__ is Object.__proto__
-PASS Object.getPrototypeOf('') threw exception TypeError: Object.getPrototypeOf called on non-object.
-PASS Object.getPrototypeOf(0) threw exception TypeError: Object.getPrototypeOf called on non-object.
+PASS Object.getPrototypeOf('') is String.prototype
+PASS Object.getPrototypeOf(0) is Number.prototype
 PASS Object.getPrototypeOf([]) is Array.prototype
 PASS Object.getPrototypeOf({}) is Object.prototype
 PASS Object.getPrototypeOf(new Date) is Date.prototype
diff --git a/deps/v8/test/webkit/prototypes.js b/deps/v8/test/webkit/prototypes.js
index 26ae286df6..9e62c3a52e 100644
--- a/deps/v8/test/webkit/prototypes.js
+++ b/deps/v8/test/webkit/prototypes.js
@@ -43,8 +43,8 @@ shouldBe("Date.__proto__", "Object.__proto__");
 shouldBe("Number.__proto__", "Object.__proto__");
 shouldBe("String.__proto__", "Object.__proto__");
 
-shouldThrow("Object.getPrototypeOf('')");
-shouldThrow("Object.getPrototypeOf(0)");
+shouldBe("Object.getPrototypeOf('')", "String.prototype");
+shouldBe("Object.getPrototypeOf(0)", "Number.prototype");
 shouldBe("Object.getPrototypeOf([])", "Array.prototype");
 shouldBe("Object.getPrototypeOf({})", "Object.prototype");
 shouldBe("Object.getPrototypeOf(new Date)", "Date.prototype");
diff --git a/deps/v8/test/webkit/resources/standalone-pre.js b/deps/v8/test/webkit/resources/standalone-pre.js
index 5f164dbcb5..3c94dd64c1 100644
--- a/deps/v8/test/webkit/resources/standalone-pre.js
+++ b/deps/v8/test/webkit/resources/standalone-pre.js
@@ -89,9 +89,12 @@ function isResultCorrect(_actual, _expected)
 
 function stringify(v)
 {
+    if (v)
+        return v.toString();
     if (v === 0 && 1/v < 0)
         return "-0";
-    else return "" + v;
+    else
+        return "" + v;
 }
 
 function shouldBe(_a, _b)
@@ -114,7 +117,7 @@ function shouldBe(_a, _b)
   else if (typeof(_av) == typeof(_bv))
     testFailed(_a + " should be " + _bv + ". Was " + stringify(_av) + ".");
   else
-    testFailed(_a + " should be " + _bv + " (of type " + typeof _bv + "). Was " + _av + " (of type " + typeof _av + ").");
+    testFailed(_a + " should be " + _bv + " (of type " + typeof _bv + "). Was " + stringify(_av) + " (of type " + typeof _av + ").");
 }
 
 function shouldBeTrue(_a) { shouldBe(_a, "true"); }
@@ -171,7 +174,18 @@ function shouldThrow(_a, _e)
   } else if (typeof _av == "undefined")
     testFailed(_a + " should throw " + (typeof _e == "undefined" ? "an exception" : _ev) + ". Was undefined.");
   else
-    testFailed(_a + " should throw " + (typeof _e == "undefined" ? "an exception" : _ev) + ". Was " + _av + ".");
+    testFailed(_a + " should throw " + (typeof _e == "undefined" ? "an exception" : _ev) + ". Was " + stringify(_av) + ".");
+}
+
+
+function shouldNotThrow(_a)
+{
+    try {
+        eval(_a);
+        testPassed(_a + " did not throw exception.");
+    } catch (e) {
+        testFailed(_a + " should not throw exception. Threw exception " + e + ".");
+    }
 }
 
 function isSuccessfullyParsed()
diff --git a/deps/v8/test/webkit/strict-throw-type-error-expected.txt b/deps/v8/test/webkit/strict-throw-type-error-expected.txt
deleted file mode 100644
index 607498e4eb..0000000000
--- a/deps/v8/test/webkit/strict-throw-type-error-expected.txt
+++ /dev/null
@@ -1,43 +0,0 @@
-# Copyright 2013 the V8 project authors. All rights reserved.
-# Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1.  Redistributions of source code must retain the above copyright
-#     notice, this list of conditions and the following disclaimer.
-# 2.  Redistributions in binary form must reproduce the above copyright
-#     notice, this list of conditions and the following disclaimer in the
-#     documentation and/or other materials provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
-# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-# DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
-# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-ThrowTypeError is a singleton object
-
-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-PASS functionCaller1 === functionCaller2 is true
-PASS functionCaller1 === functionArguments1 is true
-PASS functionCaller1 === argumentsCaller1 is true
-PASS functionCaller1 === argumentsCallee1 is true
-PASS functionCaller1 === boundCaller1 is true
-PASS functionCaller1 === boundArguments1 is true
-PASS functionCaller2 === functionArguments2 is true
-PASS functionCaller2 === argumentsCaller2 is true
-PASS functionCaller2 === argumentsCallee2 is true
-PASS functionCaller2 === boundCaller2 is true
-PASS functionCaller2 === boundArguments2 is true
-PASS successfullyParsed is true
-
-TEST COMPLETE
-
diff --git a/deps/v8/test/webkit/strict-throw-type-error.js b/deps/v8/test/webkit/strict-throw-type-error.js
deleted file mode 100644
index c9e34a3878..0000000000
--- a/deps/v8/test/webkit/strict-throw-type-error.js
+++ /dev/null
@@ -1,73 +0,0 @@
-// Copyright 2013 the V8 project authors. All rights reserved.
-// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions
-// are met:
-// 1.  Redistributions of source code must retain the above copyright
-//     notice, this list of conditions and the following disclaimer.
-// 2.  Redistributions in binary form must reproduce the above copyright
-//     notice, this list of conditions and the following disclaimer in the
-//     documentation and/or other materials provided with the distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
-// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
-// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-description("ThrowTypeError is a singleton object");
-
-function getter(object, name)
-{
-    Object.getOwnPropertyDescriptor(object, name).get;
-}
-
-function strictArgumentsFunction1()
-{
-    "use strict";
-    return arguments;
-}
-var strictArguments1 = strictArgumentsFunction1();
-var boundFunction1 = strictArgumentsFunction1.bind();
-var functionCaller1 = getter(strictArgumentsFunction1, "caller");
-var functionArguments1 = getter(strictArgumentsFunction1, "arguments");
-var argumentsCaller1 = getter(strictArguments1, "caller");
-var argumentsCallee1 = getter(strictArguments1, "callee");
-var boundCaller1 = getter(boundFunction1, "caller");
-var boundArguments1 = getter(boundFunction1, "arguments");
-
-function strictArgumentsFunction2()
-{
-    "use strict";
-    return arguments;
-}
-var strictArguments2 = strictArgumentsFunction2();
-var boundFunction2 = strictArgumentsFunction2.bind();
-var functionCaller2 = getter(strictArgumentsFunction2, "caller");
-var functionArguments2 = getter(strictArgumentsFunction2, "arguments");
-var argumentsCaller2 = getter(strictArguments2, "caller");
-var argumentsCallee2 = getter(strictArguments2, "callee");
-var boundCaller2 = getter(boundFunction2, "caller");
-var boundArguments2 = getter(boundFunction2, "arguments");
-
-shouldBeTrue('functionCaller1 === functionCaller2');
-
-shouldBeTrue('functionCaller1 === functionArguments1');
-shouldBeTrue('functionCaller1 === argumentsCaller1');
-shouldBeTrue('functionCaller1 === argumentsCallee1');
-shouldBeTrue('functionCaller1 === boundCaller1');
-shouldBeTrue('functionCaller1 === boundArguments1');
-
-shouldBeTrue('functionCaller2 === functionArguments2');
-shouldBeTrue('functionCaller2 === argumentsCaller2');
-shouldBeTrue('functionCaller2 === argumentsCallee2');
-shouldBeTrue('functionCaller2 === boundCaller2');
-shouldBeTrue('functionCaller2 === boundArguments2');
-
-successfullyParsed = true;