Move a bunch of files from chrome\common to content\common.

content/content_renderer.gypi

 # Copyright (c) 2011 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': 'content_renderer',
       'msvs_guid': '9AAA8CF2-9B3D-4895-8CB9-D70BBD125EAD',
       'type': '<(library)',
       'dependencies': [
         'content_common',
         '../skia/skia.gyp:skia',
         '../third_party/ffmpeg/ffmpeg.gyp:ffmpeg',
         '../third_party/libjingle/libjingle.gyp:libjingle',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
+        'renderer/active_notification_tracker.cc',
+        'renderer/active_notification_tracker.h',
         'renderer/audio_device.cc',
         'renderer/audio_device.h',
         'renderer/audio_message_filter.cc',
         'renderer/audio_message_filter.h',
         'renderer/cookie_message_filter.cc',
         'renderer/cookie_message_filter.h',
         'renderer/device_orientation_dispatcher.cc',
         'renderer/device_orientation_dispatcher.h',
         'renderer/geolocation_dispatcher.cc',
         'renderer/geolocation_dispatcher.h',
@@ skipping 16 matching lines @@
         'renderer/p2p/socket_client.cc',
         'renderer/p2p/socket_client.h',
         'renderer/p2p/socket_dispatcher.cc',
         'renderer/p2p/socket_dispatcher.h',
         'renderer/speech_input_dispatcher.cc',
         'renderer/speech_input_dispatcher.h',
       ],
     },
   ],
 }