Implement native web notifications for mac

chrome/chrome_browser.gypi

 # Copyright 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': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 2035 matching lines @@
       'browser/notifications/notifier_state_tracker_factory.h',
       'browser/notifications/persistent_notification_delegate.cc',
       'browser/notifications/persistent_notification_delegate.h',
       'browser/notifications/platform_notification_service_impl.cc',
       'browser/notifications/platform_notification_service_impl.h',
       'browser/notifications/profile_notification.cc',
       'browser/notifications/profile_notification.h',
       'browser/push_messaging/push_messaging_notification_manager.cc',
       'browser/push_messaging/push_messaging_notification_manager.h',
     ],
+    # Used on Mac when native notifications are enabled.
+    'chrome_browser_notifications_mac_sources': [
+      'browser/notifications/notification_ui_manager_mac.h',
+      'browser/notifications/notification_ui_manager_mac.mm',
+    ],
     # Used on Android when notifications and java_ui are enabled.
     'chrome_browser_notifications_android_java_ui_sources': [
       'browser/notifications/notification_ui_manager_android.cc',
       'browser/notifications/notification_ui_manager_android.h',
       'browser/notifications/notification_permission_infobar_delegate.cc',
       'browser/notifications/notification_permission_infobar_delegate.h',
     ],
     # Used on non-Android platforms when notifications are enabled.
     'chrome_browser_notifications_non_android_sources': [
       'browser/notifications/extension_welcome_notification.cc',
@@ skipping 1559 matching lines @@
             ['chromeos==1', {
                'sources!': [ 'browser/net/nss_context_linux.cc' ],
               }, { # chromeos==0
                'sources!': [ 'browser/net/nss_context_chromeos.cc' ],
               }],
           ],
         }],
         ['notifications==1', {
           'sources': [ '<@(chrome_browser_notifications_sources)' ],
           'conditions': [
+            ['OS=="mac"', {
+              'sources': [
+                '<@(chrome_browser_notifications_mac_sources)',
+              ],
+            }],  
             ['android_java_ui==0', {
               'sources': [
                 '<@(chrome_browser_notifications_non_android_sources)',
               ],
             }, {
               'sources': [
                 '<@(chrome_browser_notifications_android_java_ui_sources)',
               ],
             }],
           ],
@@ skipping 500 matching lines @@
             '../components/components.gyp:omnibox_browser',
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
           ],
         },
       ],
     }],
   ],
 }