Mac: Enable fastbuild.

build/common.gypi

 # Copyright (c) 2010 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': {
     # .gyp files or targets should set chromium_code to 1 if they build
@@ skipping 419 matching lines @@
         'defines': ['OS_CHROMEOS=1'],
       }],
       ['remoting==1', {
         'defines': ['ENABLE_REMOTING=1'],
       }],
       ['proprietary_codecs==1', {
         'defines': ['USE_PROPRIETARY_CODECS'],
       }],
       ['fastbuild!=0', {
         'conditions': [
-          # Finally, for Windows, we simply turn on profiling.
+          # For Windows, we don't genererate debug information.
           ['OS=="win"', {
             'msvs_settings': {
               'VCLinkerTool': {
                 'GenerateDebugInformation': 'false',
               },
               'VCCLCompilerTool': {
                 'DebugInformationFormat': '0',
               }
             }
-          }, { # else: OS != "win"
-            'cflags': [ '-g1' ],
+          }, { # else: OS != "win", generate less debug information.
+            'variables': {
+              'debug_extra_cflags': '-g1',
+            },
           }],
         ],  # conditions for fastbuild.
       }],  # fastbuild!=0
       ['selinux==1', {
         'defines': ['CHROMIUM_SELINUX=1'],
       }],
       ['win_use_allocator_shim==0', {
         'conditions': [
           ['OS=="win"', {
             'defines': ['NO_TCMALLOC'],
@@ skipping 946 matching lines @@
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }
 
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 # tab-width:2
 # indent-tabs-mode:nil
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