gpu: Refactor GpuMemoryBuffer framework for multi-process support.

ppapi/proxy/ppapi_command_buffer_proxy.h

 // Copyright (c) 2012 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 PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
 #define PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
 
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
 #include "gpu/command_buffer/common/command_buffer.h"
@@ skipping 33 matching lines @@
   virtual State FlushSync(int32 put_offset, int32 last_known_get);
   virtual void SetGetBuffer(int32 transfer_buffer_id);
   virtual void SetGetOffset(int32 get_offset);
   virtual gpu::Buffer CreateTransferBuffer(size_t size, int32* id);
   virtual void DestroyTransferBuffer(int32 id);
   virtual gpu::Buffer GetTransferBuffer(int32 id);
   virtual void SetToken(int32 token);
   virtual void SetParseError(gpu::error::Error error);
   virtual void SetContextLostReason(gpu::error::ContextLostReason reason);
   virtual uint32 InsertSyncPoint();
+  virtual gfx::GpuMemoryBuffer* CreateGpuMemoryBuffer(
+      size_t width,
+      size_t height,
+      unsigned internalformat,
+      int32* id);
+  virtual void DestroyGpuMemoryBuffer(int32 id);
 
  private:
   bool Send(IPC::Message* msg);
   void UpdateState(const gpu::CommandBuffer::State& state, bool success);
 
   typedef base::hash_map<int32, gpu::Buffer> TransferBufferMap;
   TransferBufferMap transfer_buffers_;
 
   State last_state_;
 
   HostResource resource_;
   ProxyChannel* channel_;
 
   base::Closure channel_error_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(PpapiCommandBufferProxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif // PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_