Sample code: IPC Transport object for GPU

content/common/gpu/client/gpu_jpeg_decode_accelerator_host.h

 // Copyright 2015 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_CLIENT_GPU_JPEG_DECODE_ACCELERATOR_HOST_H_
 #define CONTENT_COMMON_GPU_CLIENT_GPU_JPEG_DECODE_ACCELERATOR_HOST_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
+#include "content/common/gpu/client/ipc/gpu_jpeg_decode_accelerator_host_ipc_transport.h"
 #include "media/video/jpeg_decode_accelerator.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
-namespace IPC {
-class Listener;
-class Message;
-}
-
 namespace content {
 class GpuChannelHost;
 
 // This class is used to talk to JpegDecodeAccelerator in the GPU process
 // through IPC messages.
 class GpuJpegDecodeAcceleratorHost : public media::JpegDecodeAccelerator,
                                      public base::NonThreadSafe {
  public:
   // VideoCaptureGpuJpegDecoder owns |this| and |channel|. And
   // VideoCaptureGpuJpegDecoder delete |this| before |channel|. So |this| is
   // guaranteed not to outlive |channel|.
   GpuJpegDecodeAcceleratorHost(
       GpuChannelHost* channel,
-      int32_t route_id,
-      const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);
+      scoped_ptr<GpuJpegDecodeAcceleratorHostIPCTransport> transport);
   ~GpuJpegDecodeAcceleratorHost() override;
 
   // media::JpegDecodeAccelerator implementation.
   // |client| is called on the IO thread, but is never called into after the
   // GpuJpegDecodeAcceleratorHost is destroyed.
   bool Initialize(media::JpegDecodeAccelerator::Client* client) override;
   void Decode(const media::BitstreamBuffer& bitstream_buffer,
               const scoped_refptr<media::VideoFrame>& video_frame) override;
   bool IsSupported() override;
 
-  base::WeakPtr<IPC::Listener> GetReceiver();
-
  private:
   class Receiver;
 
-  void Send(IPC::Message* message);
-
   // Unowned reference to the GpuChannelHost to send IPC messages to the GPU
   // process.
   GpuChannelHost* channel_;
 
-  // Route ID for the associated decoder in the GPU process.
-  int32_t decoder_route_id_;
-
   // GPU IO task runner.
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 
   scoped_ptr<Receiver> receiver_;
 
+  scoped_ptr<GpuJpegDecodeAcceleratorHostIPCTransport> transport_;
+
   DISALLOW_COPY_AND_ASSIGN(GpuJpegDecodeAcceleratorHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_CLIENT_GPU_JPEG_DECODE_ACCELERATOR_HOST_H_