Roll Chrome into Mojo.

build/common.gypi

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 949 matching lines @@
         }],
 
         # Disable various features by default on embedded.
         ['embedded==1', {
           'remoting%': 0,
           'enable_basic_printing%': 0,
           'enable_print_preview%': 0,
         }],
 
         # By default, use ICU data file (icudtl.dat) on all platforms
-        # except when building Android WebView or Chromecast.
+        # except when building Android WebView.
         # TODO(jshin): Handle 'use_system_icu' on Linux (Chromium).
         # Set the data reduction proxy origin for Android Webview.
-        ['android_webview_build==0 and android_webview_telemetry_build==0 and chromecast==0', {
+        ['android_webview_build==0 and android_webview_telemetry_build==0', {
           'icu_use_data_file_flag%' : 1,
         }, {
           'icu_use_data_file_flag%' : 0,
         }],
         ['OS=="win" or OS=="mac"', {
             'enable_wifi_bootstrapping%' : 1,
         }],
 
         # Path to sas.dll, which provides the SendSAS function.
         # http://msdn.microsoft.com/en-us/library/windows/desktop/dd979761(v=vs.85).aspx
@@ skipping 1146 matching lines @@
         'grit_rc_header_format': ['-h', '#define {textual_id} __pragma(message("whitelisted_resource_{numeric_id}")) {numeric_id}'],
       }],
       ['enable_mdns==1 or OS=="mac"', {
         'grit_defines': ['-D', 'enable_service_discovery'],
         'enable_service_discovery%': 1
       }],
       ['clang_use_chrome_plugins==1 and OS!="win"', {
         'clang_chrome_plugins_flags': [
           '<!@(<(DEPTH)/tools/clang/scripts/plugin_flags.sh)'
         ],
+        'conditions': [
+          # TODO(dcheng): https://crbug.com/417463 -- work to enable this flag
+          # on all platforms is currently underway.
+          ['OS=="linux" and chromeos==0', {
+            'clang_chrome_plugins_flags': [
+              '-Xclang',
+              '-plugin-arg-find-bad-constructs',
+              '-Xclang',
+              'strict-virtual-specifiers',
+            ],
+          }],
+        ],
       }],
       ['asan==1 or msan==1 or lsan==1 or tsan==1', {
         'clang%': 1,
         'use_allocator%': 'none',
         'use_sanitizer_options%': 1,
       }],
       ['asan==1 and OS=="linux" and chromeos==0', {
         'use_custom_libcxx%': 1,
       }],
       ['ubsan==1', {
@@ skipping 1215 matching lines @@
               }],
               ['win_release_OmitFramePointers==0', {
                 'OmitFramePointers': 'false',
                 # The above is not sufficient (http://crbug.com/106711): it
                 # simply eliminates an explicit "/Oy", but both /O2 and /Ox
                 # perform FPO regardless, so we must explicitly disable.
                 # We still want the false setting above to avoid having
                 # "/Oy /Oy-" and warnings about overriding.
                 'AdditionalOptions': ['/Oy-'],
               }],
+              ['asan==0', {
+                # Put data in separate COMDATs. This allows the linker
+                # to put bit-identical constants at the same address even if
+                # they're unrelated constants, which saves binary size.
+                # This optimization can't be used when ASan is enabled because
+                # it is not compatible with the ASan ODR checker.
+                'AdditionalOptions': ['/Gw'],
+              }],
             ],
             'AdditionalOptions': [
                 '/d2Zi+',  # Improve debugging of Release builds.
                 '/Zc:inline',  # Remove unreferenced COMDAT (faster links).
-                '/Gw',  # Put data in separate COMDATs.
                 '<@(win_release_extra_cflags)',
             ],
           },
           'VCLinkerTool': {
             # LinkIncremental is a tri-state boolean, where 0 means default
             # (i.e., inherit from parent solution), 1 means false, and
             # 2 means true.
             'LinkIncremental': '1',
             # This corresponds to the /PROFILE flag which ensures the PDB
             # file contains FIXUP information (growing the PDB file by about
@@ skipping 1858 matching lines @@
               # - "max", whole program optimization and link-time code
               #   generation. This is very expensive and should be used
               #   sparingly.
               'variables': {
                 'optimize%': 'size',
               },
               'msvs_settings': {
                 'VCLinkerTool': {
                   # Set /LTCG for the official builds.
                   'LinkTimeCodeGeneration': '1',
+                  'AdditionalOptions': [
+                    # Set the number of LTCG code-gen threads to eight.
+                    # The default is four. This gives a 5-10% link speedup.
+                    '/cgthreads:8',
+                  ],
                 },
               },
               'target_conditions': [
                 ['optimize=="size"', {
                     'msvs_settings': {
                       'VCCLCompilerTool': {
                         # 1, optimizeMinSpace, Minimize Size (/O1)
                         'Optimization': '1',
                         # 2, favorSize - Favor small code (/Os)
                         'FavorSizeOrSpeed': '2',
@@ skipping 552 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }