Delete GpuVideoService and move GpuVideoDecodeAccelerator ownership to stubs

content/common/gpu/gpu_command_buffer_stub.h

Index: content/common/gpu/gpu_command_buffer_stub.h
diff --git a/content/common/gpu/gpu_command_buffer_stub.h b/content/common/gpu/gpu_command_buffer_stub.h
index 5fdb0e930f497beab8c7456e1ded330a5413a459..71587c25477197ee6e92a3f3be48b3c630e8f2a1 100644
--- a/content/common/gpu/gpu_command_buffer_stub.h
+++ b/content/common/gpu/gpu_command_buffer_stub.h
@@ -15,6 +15,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/process.h"
 #include "base/task.h"
+#include "content/common/gpu/media/gpu_video_decode_accelerator.h"
 #include "gpu/command_buffer/service/command_buffer_service.h"
 #include "gpu/command_buffer/service/gpu_scheduler.h"
 #include "ipc/ipc_channel.h"
@@ -120,6 +121,10 @@ class GpuCommandBufferStub
   void OnGetTransferBuffer(int32 id, IPC::Message* reply_message);
   void OnResizeOffscreenFrameBuffer(const gfx::Size& size);
 
+  void OnCreateVideoDecoder(int32 decoder_host_id,
+                            const std::vector<uint32>& configs);
+  void OnDestroyVideoDecoder();
+
   void OnSwapBuffers();
   void OnCommandProcessed();
   void HandleDeferredMessages();
@@ -171,6 +176,9 @@ class GpuCommandBufferStub
   GpuWatchdog* watchdog_;
   ScopedRunnableMethodFactory<GpuCommandBufferStub> task_factory_;
 
+  // The video decoder associated with this stub, if any.
+  scoped_ptr<GpuVideoDecodeAccelerator> video_decoder_;
+
   DISALLOW_COPY_AND_ASSIGN(GpuCommandBufferStub);
 };