Refactor notification operation functionality out of PNS

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 2192 matching lines @@
       'browser/notifications/desktop_notification_profile_util.cc',
       'browser/notifications/desktop_notification_profile_util.h',
       'browser/notifications/login_state_notification_blocker_chromeos.cc',
       'browser/notifications/login_state_notification_blocker_chromeos.h',
       'browser/notifications/message_center_display_service.cc',
       'browser/notifications/message_center_display_service.h',
       'browser/notifications/native_notification_display_service.cc',
       'browser/notifications/native_notification_display_service.h',
       'browser/notifications/notification.cc',
       'browser/notifications/notification.h',
+      'browser/notifications/notification_common.cc',
+      'browser/notifications/notification_common.h',
       'browser/notifications/notification_delegate.h',
       'browser/notifications/notification_display_service.h',
       'browser/notifications/notification_display_service_factory.cc',
       'browser/notifications/notification_display_service_factory.h',
       'browser/notifications/notification_object_proxy.cc',
       'browser/notifications/notification_object_proxy.h',
       'browser/notifications/notification_permission_context.cc',
       'browser/notifications/notification_permission_context.h',
       'browser/notifications/notification_platform_bridge.h',
       'browser/notifications/notification_platform_bridge_mac.h',
@@ skipping 2075 matching lines @@
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
             'common',
           ],
         },
       ],
     }],
   ],
 }