H264: Improve FFmpeg decoder performance by using I420BufferPool.

webrtc/modules/video_coding/codecs/h264/h264.gypi

 # Copyright (c) 2015 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': [
@@ skipping 22 matching lines @@
           'conditions': [
             ['rtc_initialize_ffmpeg==1', {
               'defines': [
                 'WEBRTC_INITIALIZE_FFMPEG',
               ],
             }],
           ],
           'dependencies': [
             '<(DEPTH)/third_party/ffmpeg/ffmpeg.gyp:ffmpeg',
             '<(DEPTH)/third_party/openh264/openh264.gyp:openh264_encoder',
+            '<(DEPTH)/webrtc/common_video/common_video.gyp:common_video',
           ],
           'sources': [
             'h264_decoder_impl.cc',
             'h264_decoder_impl.h',
             'h264_encoder_impl.cc',
             'h264_encoder_impl.h',
           ],
         }],
       ],
       'sources': [
@@ skipping 27 matching lines @@
             'h264_video_toolbox_encoder.cc',
             'h264_video_toolbox_encoder.h',
             'h264_video_toolbox_nalu.cc',
             'h264_video_toolbox_nalu.h',
           ],
         }, # webrtc_h264_video_toolbox
       ], # targets
     }], # OS=="ios"
   ], # conditions
 }