Added FakeGlVideoDecodeEngine to exercise the IPC protocol for hardware video decoding

chrome/renderer/media/ipc_video_decoder.h

 // Copyright (c) 2010 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 CHROME_RENDERER_MEDIA_IPC_VIDEO_DECODER_H_
 #define CHROME_RENDERER_MEDIA_IPC_VIDEO_DECODER_H_
 
 #include "base/time.h"
 #include "chrome/renderer/gpu_video_service_host.h"
 #include "media/base/pts_heap.h"
@@ skipping 30 matching lines @@
   virtual void ProduceVideoFrame(scoped_refptr<media::VideoFrame> video_frame);
 
   // GpuVideoDecoderHost::EventHandler.
   virtual void OnInitializeDone(bool success,
                                 const GpuVideoDecoderInitDoneParam& param);
   virtual void OnUninitializeDone();
   virtual void OnFlushDone();
   virtual void OnEmptyBufferDone(scoped_refptr<media::Buffer> buffer);
   virtual void OnFillBufferDone(scoped_refptr<media::VideoFrame> frame);
   virtual void OnDeviceError();
-
   virtual bool ProvidesBuffer();
 
  private:
   enum DecoderState {
     kUnInitialized,
     kPlaying,
     kFlushing,
     kPausing,
     kFlushCodec,
     kEnded,
@@ skipping 24 matching lines @@
   scoped_refptr<media::DemuxerStream> demuxer_stream_;
 
   MessageLoop* renderer_thread_message_loop_;
 
   // A context for allocating textures and issuing GLES2 commands.
   // TODO(hclam): A ggl::Context lives on the Render Thread while this object
   // lives on the Video Decoder Thread, we need to take care of context lost
   // and destruction of the context.
   ggl::Context* ggl_context_;
 
+  // Handle to the hardware video decoder. This object will use IPC to
+  // communicate with the decoder in the GPU process.
   scoped_refptr<GpuVideoDecoderHost> gpu_video_decoder_host_;
 
+  // Texture that contains the video frame.
+  // TODO(hclam): Instead of one texture, we should have a set of textures
+  // as requested by the hardware video decode engine in the GPU process.
+  unsigned int texture_;
+
   DISALLOW_COPY_AND_ASSIGN(IpcVideoDecoder);
 };
 
 #endif  // CHROME_RENDERER_MEDIA_IPC_VIDEO_DECODER_H_