New build flag system, convert Google Now flag

chrome/common_constants.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'common_constants_sources': [
       'common/chrome_constants.cc',
       'common/chrome_constants.h',
@@ skipping 54 matching lines @@
             '<@(_outputs)',
           ],
           'message': 'Generating version header file: <@(_outputs)',
         },
       ],
     },
     {
       # GN version: //chrome/common:constants
       'target_name': 'common_constants',
       'type': 'static_library',
+      'hard_dependency': 1,  # Because of transitive dep on version_header.
       'sources': [
         '<@(common_constants_sources)'
       ],
       'include_dirs': [
         '<(SHARED_INTERMEDIATE_DIR)',  # Needed by chrome_paths.cc.
       ],
       'dependencies': [
         'version_header',
+        'chrome_features.gyp:chrome_common_features',
         '../base/base.gyp:base',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../components/components.gyp:bookmarks_common',
         '../third_party/widevine/cdm/widevine_cdm.gyp:widevine_cdm_version_h',
       ],
       'target_conditions': [
         ['OS=="ios"', {
           # iOS needs chrome_paths_mac, which is excluded by filename rules;
           # re-add it in target_conditionals so it's after that exclusion.
           'sources/': [
             ['include', '^common/chrome_paths_mac\\.mm$'],
           ],
         }],
       ],
       'conditions': [
         ['disable_nacl==0', {
           'dependencies': [
             '../components/nacl.gyp:nacl_switches',
           ],
         }],
       ],
     },
   ],
   'conditions': [
     ['OS=="win" and target_arch=="ia32"', {
       'targets': [
         {
           'target_name': 'common_constants_win64',
+          'hard_dependency': 1,  # Because of transitive dep on version_header.
           'type': 'static_library',
           'sources': [
             '<@(common_constants_sources)'
           ],
           'include_dirs': [
             '<(SHARED_INTERMEDIATE_DIR)',  # Needed by chrome_paths.cc.
           ],
           'dependencies': [
             'version_header',
+            'chrome_features.gyp:chrome_common_features',
             '../base/base.gyp:base_win64',
             '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations_win64',
             '../components/nacl.gyp:nacl_switches_win64',
             '../third_party/widevine/cdm/widevine_cdm.gyp:widevine_cdm_version_h',
           ],
           'defines': [
             '<@(nacl_win64_defines)',
             'COMPILE_CONTENT_STATICALLY',
           ],
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
   ],
 }