Send hardware video frames with mailboxes.

media/filters/gpu_video_decoder.h

Index: media/filters/gpu_video_decoder.h
diff --git a/media/filters/gpu_video_decoder.h b/media/filters/gpu_video_decoder.h
index a0afd02f9be02b36240f44e1799315d82043e4b6..4173e4af5e97227a09f3212f4b2b21c07d3a659d 100644
--- a/media/filters/gpu_video_decoder.h
+++ b/media/filters/gpu_video_decoder.h
@@ -49,6 +49,10 @@ class MEDIA_EXPORT GpuVideoDecoder
                                 uint32 texture_target) = 0;
     virtual void DeleteTexture(uint32 texture_id) = 0;
 
+    virtual gpu::Mailbox ProduceTextureToMailbox(uint32 texture_id) = 0;
+    virtual void ConsumeMailboxToTexture(const gpu::Mailbox& mailbox,
+                                         uint32 texture_id) = 0;
+
     // Read pixels from a native texture and store into |pixels| as RGBA.
     virtual void ReadPixels(uint32 texture_id, uint32 texture_target,
                             const gfx::Size& size, const SkBitmap& pixels) = 0;
@@ -132,7 +136,7 @@ class MEDIA_EXPORT GpuVideoDecoder
       const scoped_refptr<VideoFrame>& frame);
 
   // Indicate the picturebuffer can be reused by the decoder.
-  void ReusePictureBuffer(int64 picture_buffer_id);
+  void ReusePictureBuffer(int64 picture_buffer_id, gpu::Mailbox mailbox);
 
   void RecordBufferData(
       const BitstreamBuffer& bitstream_buffer, const DecoderBuffer& buffer);