Add libvpx wrapper to media to support VP9 video decoding.

media/media.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Override to dynamically link the PulseAudio library.
     'use_pulseaudio%': 0,
     # Override to dynamically link the cras (ChromeOS audio) library.
     'use_cras%': 0,
     'conditions': [
       ['OS == "android" or OS == "ios"', {
         # Android and iOS don't use ffmpeg.
         'use_ffmpeg%': 0,
       }, {  # 'OS != "android" and OS != "ios"'
         'use_ffmpeg%': 1,
       }],
     ],
   },
   'targets': [
     {
       'target_name': 'media',
       'type': '<(component)',
       'dependencies': [
         '../base/base.gyp:base',
         '../build/temp_gyp/googleurl.gyp:googleurl',
         '../crypto/crypto.gyp:crypto',
         '../skia/skia.gyp:skia',
+        '../third_party/libvpx/libvpx.gyp:libvpx',
         '../third_party/opus/opus.gyp:opus',
         '../ui/ui.gyp:ui',
       ],
       'defines': [
         'MEDIA_IMPLEMENTATION',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
@@ skipping 261 matching lines @@
         'filters/opus_audio_decoder.cc',
         'filters/opus_audio_decoder.h',
         'filters/skcanvas_video_renderer.cc',
         'filters/skcanvas_video_renderer.h',
         'filters/source_buffer_stream.cc',
         'filters/source_buffer_stream.h',
         'filters/video_frame_generator.cc',
         'filters/video_frame_generator.h',
         'filters/video_renderer_base.cc',
         'filters/video_renderer_base.h',
+        'filters/vpx_video_decoder.cc',
+        'filters/vpx_video_decoder.h',
         'video/capture/fake_video_capture_device.cc',
         'video/capture/fake_video_capture_device.h',
         'video/capture/linux/video_capture_device_linux.cc',
         'video/capture/linux/video_capture_device_linux.h',
         'video/capture/mac/video_capture_device_mac.h',
         'video/capture/mac/video_capture_device_mac.mm',
         'video/capture/mac/video_capture_device_qtkit_mac.h',
         'video/capture/mac/video_capture_device_qtkit_mac.mm',
         'video/capture/video_capture.h',
         'video/capture/video_capture_device.h',
@@ skipping 1037 matching lines @@
             'media',
           ],
           'sources': [
             'tools/media_bench/media_bench.cc',
           ],
         },
       ],
     }]
   ],
 }