Reland of Switch to use SequencedTaskChecker instead of ThreadChecker where needed.

webrtc/common_video/common_video.gyp

 # Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 {
   'includes': ['../build/common.gypi'],
   'targets': [
     {
       'target_name': 'common_video',
       'type': 'static_library',
       'include_dirs': [
         '<(webrtc_root)/modules/interface/',
         'include',
         'libyuv/include',
       ],
       'dependencies': [
+        '<(webrtc_root)/base/base.gyp:rtc_task_queue',
         '<(webrtc_root)/common.gyp:webrtc_common',
         '<(webrtc_root)/system_wrappers/system_wrappers.gyp:system_wrappers',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           'include',
           'libyuv/include',
         ],
       },
       'conditions': [
@@ skipping 40 matching lines @@
         'include/video_frame_buffer.h',
         'libyuv/include/webrtc_libyuv.h',
         'libyuv/webrtc_libyuv.cc',
         'video_frame_buffer.cc',
         'video_render_frames.cc',
         'video_render_frames.h',
       ],
     },
   ],  # targets
 }