Added Pepper 3D render context that instantiates the GPU plugin....

gpu/command_buffer/service/command_buffer_service.h

Index: gpu/command_buffer/service/command_buffer_service.h
===================================================================
--- gpu/command_buffer/service/command_buffer_service.h	(revision 35153)
+++ gpu/command_buffer/service/command_buffer_service.h	(working copy)
@@ -24,8 +24,8 @@
   virtual ~CommandBufferService();
 
   // CommandBuffer implementation:
-  virtual base::SharedMemory* Initialize(int32 size);
-  virtual base::SharedMemory* GetRingBuffer();
+  virtual bool Initialize(int32 size);
+  virtual Buffer GetRingBuffer();
   virtual int32 GetSize();
   virtual int32 SyncOffsets(int32 put_offset);
   virtual int32 GetGetOffset();
@@ -34,7 +34,7 @@
   virtual void SetPutOffsetChangeCallback(Callback0::Type* callback);
   virtual int32 CreateTransferBuffer(size_t size);
   virtual void DestroyTransferBuffer(int32 id);
-  virtual base::SharedMemory* GetTransferBuffer(int32 handle);
+  virtual Buffer GetTransferBuffer(int32 handle);
   virtual int32 GetToken();
   virtual void SetToken(int32 token);
   virtual int32 ResetParseError();