<chromium> Mac: Use libc++ instead of stdlibc++.

- Add a missing include file to process_iterator_mac.cc.
- Disable Chromium clang plugins.
- Add a use_libcpp variable to common.gypi that can be used
  to build with libc++ instead of libstdc++.
  In this case several warnings also must be disabled.
- ext/hash_map and ext/hash_set are deprecated.
  Use unordered containers as a replacement.

Change-Id: Ief9e8901d0463f2bb62a5960cde03543b3999be1
Reviewed-by: Zeno Albisser <zeno.albisser@digia.com>

3 files changed, 44 insertions, 15 deletions

diff --git a/chromium/base/process/process_iterator_mac.cc b/chromium/base/process/process_iterator_mac.cc
index 29daa2d489f..e35c2ae19ba 100644
--- a/chromium/base/process/process_iterator_mac.cc
+++ b/chromium/base/process/process_iterator_mac.cc
@@ -7,6 +7,7 @@
 #include <errno.h>
 #include <sys/sysctl.h>
 #include <sys/types.h>
+#include <unistd.h>
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
diff --git a/chromium/build/common.gypi b/chromium/build/common.gypi
index d7b385cc0ee..e995bd644eb 100644
--- a/chromium/build/common.gypi
+++ b/chromium/build/common.gypi
@@ -1232,6 +1232,9 @@
     # rlz codes for searches but do not use the library.
     'enable_rlz%': 0,
 
+    # Compile with libc++ instead of libstdc++.
+    'use_libcpp%' : 0,
+
     # Turns on the i18n support in V8.
     'v8_enable_i18n_support': 1,
 
@@ -2134,6 +2137,18 @@
       ['use_clipboard_aurax11==1', {
         'defines': ['USE_CLIPBOARD_AURAX11=1'],
       }],
+      ['use_libcpp==1', {
+        'defines': ['USE_UNORDERED_CONTAINERS=1'],
+        'cflags_cc': [
+          '-Wno-deprecated-declarations',
+          '-Wno-newline-eof',
+          '-Wno-unused-value',
+          '-Wno-unused-variable',
+          '-Wno-unused-function',
+          '-Wno-header-hygiene',
+          '-stdlib=libc++'
+        ],
+      }],
       ['enable_one_click_signin==1', {
         'defines': ['ENABLE_ONE_CLICK_SIGNIN'],
       }],
@@ -3335,7 +3350,7 @@
               # Clang considers the `register` keyword as deprecated, but e.g.
               # code generated by flex (used in angle) contains that keyword.
               # http://crbug.com/255186
-              '-Wno-deprecated-register',
+              '-Wno-deprecated',
             ],
             'cflags!': [
               # Clang doesn't seem to know know this flag.
@@ -4043,7 +4058,19 @@
                 # Clang considers the `register` keyword as deprecated, but e.g.
                 # code generated by flex (used in angle) contains that keyword.
                 # http://crbug.com/255186
-                '-Wno-deprecated-register',
+                '-Wno-deprecated',
+              ],
+            }],
+            ['use_libcpp==1', {
+              'OTHER_CPLUSPLUSFLAGS': ['-stdlib=libc++'],
+              'USE_LIBCPP': 'YES',
+              'WARNING_CFLAGS': [
+                '-Wno-deprecated-declarations',
+                '-Wno-newline-eof',
+                '-Wno-unused-value',
+                '-Wno-unused-variable',
+                '-Wno-unused-function',
+                '-Wno-header-hygiene',
               ],
             }],
             ['clang==1 and clang_use_chrome_plugins==1', {
diff --git a/chromium/third_party/protobuf/config.h b/chromium/third_party/protobuf/config.h
index dcc0041c2fe..affcf55be5f 100644
--- a/chromium/third_party/protobuf/config.h
+++ b/chromium/third_party/protobuf/config.h
@@ -1,31 +1,32 @@
 /* config.h.  Generated from config.h.in by configure.  */
 /* config.h.in.  Generated from configure.ac by autoheader.  */
 
-/* the name of <hash_set> */
-#define HASH_MAP_CLASS hash_map
+#if defined(USE_UNORDERED_CONTAINERS)
+
+#define HASH_MAP_H <unordered_map>
+#define HASH_SET_H <unordered_set>
+#define HASH_NAMESPACE std
+#define HASH_MAP_CLASS unordered_map
+#define HASH_SET_CLASS unordered_set
 
-/* the location of <hash_map> */
-#if defined(USE_STLPORT)
-#define HASH_MAP_H <hash_map>
 #else
-#define HASH_MAP_H <ext/hash_map>
-#endif
 
-/* the namespace of hash_map/hash_set */
 #if defined(USE_STLPORT)
+#define HASH_MAP_H <hash_map>
+#define HASH_SET_H <hash_set>
 #define HASH_NAMESPACE std
 #else
+#define HASH_MAP_H <ext/hash_map>
+#define HASH_SET_H <ext/hash_set>
 #define HASH_NAMESPACE __gnu_cxx
 #endif
 
 /* the name of <hash_set> */
+#define HASH_MAP_CLASS hash_map
+
+/* the name of <hash_set> */
 #define HASH_SET_CLASS hash_set
 
-/* the location of <hash_set> */
-#if defined(USE_STLPORT)
-#define HASH_SET_H <hash_set>
-#else
-#define HASH_SET_H <ext/hash_set>
 #endif
 
 /* Define to 1 if you have the <dlfcn.h> header file. */