Refactor Web Notification permission requests.

content/content_common.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../components/tracing.gyp:tracing',
     '../gpu/command_buffer/command_buffer.gyp:gles2_utils',
     '../net/net.gyp:net',
@@ skipping 394 matching lines @@
       'common/one_writer_seqlock.h',
       'common/p2p_messages.h',
       'common/page_state_serialization.cc',
       'common/page_state_serialization.h',
       'common/page_zoom.cc',
       'common/pepper_messages.h',
       'common/pepper_plugin_list.cc',
       'common/pepper_plugin_list.h',
       'common/pepper_renderer_instance_data.cc',
       'common/pepper_renderer_instance_data.h',
+      'common/platform_notification_messages.h',
       'common/plugin_constants_win.cc',
       'common/plugin_constants_win.h',
       'common/plugin_list.cc',
       'common/plugin_list.h',
       'common/plugin_list_mac.mm',
       'common/plugin_list_posix.cc',
       'common/plugin_list_win.cc',
       'common/plugin_process_messages.h',
       'common/power_monitor_messages.h',
       'common/process_type.cc',
@@ skipping 457 matching lines @@
     }, {
       'defines': ['USE_SECCOMP_BPF'],
     }],
     ['use_ozone==1', {
       'dependencies': [
         '../ui/ozone/ozone.gyp:ozone',
       ],
     }],
   ],
 }