Move extension notifications to extensions/browser/notification_types.h

extensions/extensions.gyp

 # Copyright 2013 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,
   },
   'targets': [
     {
@@ skipping 433 matching lines @@
         'browser/info_map.h',
         'browser/install_flag.h',
         'browser/file_highlighter.cc',
         'browser/file_highlighter.h',
         'browser/file_reader.cc',
         'browser/file_reader.h',
         'browser/lazy_background_task_queue.cc',
         'browser/lazy_background_task_queue.h',
         'browser/management_policy.cc',
         'browser/management_policy.h',
+        'browser/notification_types.h',
         'browser/pref_names.cc',
         'browser/pref_names.h',
         'browser/process_manager.cc',
         'browser/process_manager.h',
         'browser/process_manager_delegate.h',
         'browser/process_manager_observer.h',
         'browser/process_map.cc',
         'browser/process_map.h',
         'browser/process_map_factory.cc',
         'browser/process_map_factory.h',
@@ skipping 390 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/api/cast_channel/cast_channel.proto' ],
       'variables': {
           'proto_in_dir': 'browser/api/cast_channel',
           'proto_out_dir': 'extensions/browser/api/cast_channel',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ]
 }