deps: update V8 to 7.7.299.4

PR-URL: https://github.com/nodejs/node/pull/28918
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

2 files changed, 31 insertions, 0 deletions

diff --git a/deps/v8/test/debugger/regress/regress-7421.js b/deps/v8/test/debugger/regress/regress-7421.js
index cb1e612d8b..dfac06d864 100644
--- a/deps/v8/test/debugger/regress/regress-7421.js
+++ b/deps/v8/test/debugger/regress/regress-7421.js
@@ -20,6 +20,7 @@ function wrapper1() {
     // Get this function optimized before calling to increment.
     // Check that that call performs the necessary side-effect checks.
     %OptimizeOsr();
+    %PrepareFunctionForOptimization(wrapper1);
   }
   f1();
 }
diff --git a/deps/v8/test/debugger/regress/regress-crbug-760225.js b/deps/v8/test/debugger/regress/regress-crbug-760225.js
new file mode 100644
index 0000000000..86697143d7
--- /dev/null
+++ b/deps/v8/test/debugger/regress/regress-crbug-760225.js
@@ -0,0 +1,30 @@
+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+Debug = debug.Debug
+
+let thisValue;
+function listener(event, exec_state, event_data, data) {
+  if (event == Debug.DebugEvent.Break) {
+    thisValue = exec_state.frame(0).evaluate('this').value();
+  }
+};
+
+Debug.setListener(listener);
+
+class Foo {}
+class Bar extends Foo {
+  constructor() {
+    super();
+    var b = () => this;
+    this.c = 'b';  // <-- Inspect 'this' (it will be undefined)
+    debugger;
+  }
+}
+
+new Bar();
+
+Debug.setListener(null);
+
+assertNotEquals(undefined, thisValue);