Run VDA::Decode on GPU IO thread if VDA supports it.

content/common/gpu/media/android_video_decode_accelerator.h

 // Copyright (c) 2013 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.
 
 #ifndef CONTENT_COMMON_GPU_MEDIA_ANDROID_VIDEO_DECODE_ACCELERATOR_H_
 #define CONTENT_COMMON_GPU_MEDIA_ANDROID_VIDEO_DECODE_ACCELERATOR_H_
 
 #include <dlfcn.h>
 #include <list>
 #include <map>
 #include <queue>
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/threading/thread_checker.h"
 #include "content/common/content_export.h"
+#include "content/common/gpu/media/video_decode_accelerator_impl.h"
 #include "gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "media/base/android/media_codec_bridge.h"
 #include "media/video/video_decode_accelerator.h"
 
 namespace gfx {
 class SurfaceTextureBridge;
 }
 
 namespace content {
 // A VideoDecodeAccelerator implementation for Android.
 // This class decodes the input encoded stream by using Android's MediaCodec
 // class. http://developer.android.com/reference/android/media/MediaCodec.html
-class CONTENT_EXPORT AndroidVideoDecodeAccelerator :
-    public media::VideoDecodeAccelerator {
+class CONTENT_EXPORT AndroidVideoDecodeAccelerator
+    : public VideoDecodeAcceleratorImpl {
  public:
   // Does not take ownership of |client| which must outlive |*this|.
   AndroidVideoDecodeAccelerator(
       media::VideoDecodeAccelerator::Client* client,
       const base::WeakPtr<gpu::gles2::GLES2Decoder> decoder,
       const base::Callback<bool(void)>& make_context_current);
 
   // media::VideoDecodeAccelerator implementation.
   virtual bool Initialize(media::VideoCodecProfile profile) OVERRIDE;
   virtual void Decode(const media::BitstreamBuffer& bitstream_buffer) OVERRIDE;
@@ skipping 119 matching lines @@
 
   // Used for copy the texture from |surface_texture_| to picture buffers.
   scoped_ptr<gpu::CopyTextureCHROMIUMResourceManager> copier_;
 
   friend class AndroidVideoDecodeAcceleratorTest;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_ANDROID_VIDEO_DECODE_ACCELERATOR_H_