Sample code: IPC Transport object for GPU

content/common/gpu/client/gpu_jpeg_decode_accelerator_host.h

Index: content/common/gpu/client/gpu_jpeg_decode_accelerator_host.h
diff --git a/content/common/gpu/client/gpu_jpeg_decode_accelerator_host.h b/content/common/gpu/client/gpu_jpeg_decode_accelerator_host.h
index 53465f3aee75fa5a01887e50b7509ef67fdf477a..d62cd1df3b2c10796cc8e107a3a0901819b3c464 100644
--- a/content/common/gpu/client/gpu_jpeg_decode_accelerator_host.h
+++ b/content/common/gpu/client/gpu_jpeg_decode_accelerator_host.h
@@ -10,17 +10,13 @@
 #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;
 
@@ -34,8 +30,7 @@ class GpuJpegDecodeAcceleratorHost : public media::JpegDecodeAccelerator,
   // 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.
@@ -46,25 +41,20 @@ class GpuJpegDecodeAcceleratorHost : public media::JpegDecodeAccelerator,
               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);
 };