[Mac] Implement a NotificationUIManager that uses Notification Center on 10.8 for text notifications

chrome/chrome_browser.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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 1434 matching lines @@
         'browser/notifications/desktop_notification_service_factory.h',
         'browser/notifications/notification.cc',
         'browser/notifications/notification.h',
         'browser/notifications/notification_delegate.h',
         'browser/notifications/notification_object_proxy.cc',
         'browser/notifications/notification_object_proxy.h',
         'browser/notifications/notification_options_menu_model.cc',
         'browser/notifications/notification_options_menu_model.h',
         'browser/notifications/notification_prefs_manager.cc',
         'browser/notifications/notification_prefs_manager.h',
+        'browser/notifications/notification_ui_manager.cc',
         'browser/notifications/notification_ui_manager.h',
         'browser/notifications/notification_ui_manager_impl.cc',
         'browser/notifications/notification_ui_manager_impl.h',
+        'browser/notifications/notification_ui_manager_mac.mm',
+        'browser/notifications/notification_ui_manager_mac.h',
         'browser/ntp_background_util.cc',
         'browser/ntp_background_util.h',
         'browser/omnibox_search_hint.cc',
         'browser/omnibox_search_hint.h',
         'browser/oom_priority_manager.cc',
         'browser/oom_priority_manager.h',
         'browser/page_info_model.cc',
         'browser/page_info_model.h',
         'browser/page_info_model_observer.h',
         'browser/parsers/metadata_parser.cc',
@@ skipping 3767 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/history/in_memory_url_index_cache.proto' ],
       'variables': {
         'proto_in_dir': 'browser/history',
         'proto_out_dir': 'chrome/browser/history',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }