Make chrome and other targets compile on Mac GN

extensions/shell/app_shell.gyp

 # Copyright 2014 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.
 
 {
   'includes': [
     'app_shell.gypi',
   ],
   'variables': {
     # Product name is used for Mac bundle.
     'app_shell_product_name': 'App Shell',
     # The version is high enough to be supported by Omaha (at least 31)
     # but fake enough to be obviously not a Chrome release.
     'app_shell_version': '38.1234.5678.9',
     'chromium_code': 1,
   },
   'targets': [
     {
+      # GN version: //extensions/shell:app_shell_lib
       'target_name': 'app_shell_lib',
       'type': 'static_library',
       'dependencies': [
         'app_shell_version_header',
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/base/base.gyp:base_prefs',
         '<(DEPTH)/components/components.gyp:devtools_discovery',
         '<(DEPTH)/components/components.gyp:devtools_http_handler',
         '<(DEPTH)/components/components.gyp:pref_registry',
         '<(DEPTH)/components/components.gyp:update_client',
@@ skipping 71 matching lines @@
             '<(DEPTH)/components/nacl.gyp:nacl_renderer',
             '<(DEPTH)/components/nacl.gyp:nacl_switches',
           ],
           'sources': [
             '<@(app_shell_lib_sources_nacl)',
           ],
         }],
       ],
     },
     {
+      # GN version: //extensions/shell:app_shell
       'target_name': 'app_shell',
       'type': 'executable',
       'mac_bundle': 1,
       'dependencies': [
         'app_shell_lib',
         '<(DEPTH)/extensions/extensions.gyp:extensions_shell_and_test_pak',
       ],
       'include_dirs': [
         '../..',
       ],
@@ skipping 144 matching lines @@
           ],
         },
       ],
     },
   ],  # targets
 
   'conditions': [
     ['OS=="mac"', {
       'targets': [
         {
+          # GN version: //extensions/shell:app_shell_framework
           'target_name': 'app_shell_framework',
           'type': 'shared_library',
           'product_name': '<(app_shell_product_name) Framework',
           'mac_bundle': 1,
           'mac_bundle_resources': [
             '<(PRODUCT_DIR)/extensions_shell_and_test.pak',
             'app/framework-Info.plist',
           ],
           'mac_bundle_resources!': [
             'app/framework-Info.plist',
@@ skipping 124 matching lines @@
             '../../build/isolate.gypi',
           ],
           'sources': [
             'app_shell_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }