Added proxy / stub pair for GPU surfaces.

content/renderer/gpu_surface_proxy.h

 // Copyright (c) 2011 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_RENDERER_COMMAND_BUFFER_PROXY_H_
-#define CONTENT_RENDERER_COMMAND_BUFFER_PROXY_H_
+#ifndef CONTENT_RENDERER_GPU_SURFACE_PROXY_H_
+#define CONTENT_RENDERER_GPU_SURFACE_PROXY_H_
 #pragma once
 
 #if defined(ENABLE_GPU)
 
-#include <map>
-#include <queue>
-
-#include "base/callback_old.h"
-#include "base/memory/linked_ptr.h"
-#include "base/memory/scoped_ptr.h"
-#include "gpu/command_buffer/common/command_buffer.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_message.h"
 
-namespace base {
-class SharedMemory;
-}
-
 namespace gfx {
 class Size;
 }
 
-class PluginChannelHost;
-class Task;
-
-// Client side proxy that forwards messages synchronously to a
-// CommandBufferStub.
-class CommandBufferProxy : public gpu::CommandBuffer,
-                           public IPC::Channel::Listener {
+// Client side proxy that forwards messages to a GpuSurfaceStub.
+class GpuSurfaceProxy : public IPC::Channel::Listener {
  public:
-  CommandBufferProxy(IPC::Channel::Sender* channel, int route_id);
-  virtual ~CommandBufferProxy();
+  GpuSurfaceProxy(IPC::Channel::Sender* channel, int route_id);
+  virtual ~GpuSurfaceProxy();
 
   // IPC::Channel::Listener implementation:
   virtual bool OnMessageReceived(const IPC::Message& message);
   virtual void OnChannelError();
 
   int route_id() const { return route_id_; }
 
-  // CommandBuffer implementation:
-  virtual bool Initialize(int32 size);
-  virtual bool Initialize(base::SharedMemory* buffer, int32 size);
-  virtual gpu::Buffer GetRingBuffer();
-  virtual State GetState();
-  virtual void Flush(int32 put_offset);
-  virtual State FlushSync(int32 put_offset, int32 last_known_get);
-  virtual void SetGetOffset(int32 get_offset);
-  virtual int32 CreateTransferBuffer(size_t size, int32 id_request);
-  virtual int32 RegisterTransferBuffer(base::SharedMemory* shared_memory,
-                                       size_t size,
-                                       int32 id_request);
-  virtual void DestroyTransferBuffer(int32 id);
-  virtual gpu::Buffer GetTransferBuffer(int32 handle);
-  virtual void SetToken(int32 token);
-  virtual void SetParseError(gpu::error::Error error);
-  virtual void OnSwapBuffers();
-
-  // Set a callback that will be invoked when the SwapBuffers call has been
-  // issued.
-  void SetSwapBuffersCallback(Callback0::Type* callback);
-  void SetChannelErrorCallback(Callback0::Type* callback);
-
-  // Asynchronously resizes an offscreen frame buffer.
-  void ResizeOffscreenFrameBuffer(const gfx::Size& size);
-
-  // Set a task that will be invoked the next time the window becomes invalid
-  // and needs to be repainted. Takes ownership of task.
-  void SetNotifyRepaintTask(Task* task);
-
-#if defined(OS_MACOSX)
-  virtual void SetWindowSize(const gfx::Size& size);
-#endif
-
-  // Get the last state received from the service without synchronizing.
-  State GetLastState() {
-    return last_state_;
-  }
-
  private:
 
   // Send an IPC message over the GPU channel. This is private to fully
   // encapsulate the channel; all callers of this function must explicitly
-  // verify that the context has not been lost.
+  // verify that the channel is still available.
   bool Send(IPC::Message* msg);
 
-  // Message handlers:
-  void OnUpdateState(const gpu::CommandBuffer::State& state);
-  void OnNotifyRepaint();
-
-  // As with the service, the client takes ownership of the ring buffer.
-  int32 num_entries_;
-  scoped_ptr<base::SharedMemory> ring_buffer_;
-
-  // Local cache of id to transfer buffer mapping.
-  typedef std::map<int32, gpu::Buffer> TransferBufferMap;
-  TransferBufferMap transfer_buffers_;
-
-  // The last cached state received from the service.
-  State last_state_;
-
   IPC::Channel::Sender* channel_;
   int route_id_;
 
-  scoped_ptr<Task> notify_repaint_task_;
-
-  scoped_ptr<Callback0::Type> swap_buffers_callback_;
-  scoped_ptr<Callback0::Type> channel_error_callback_;
-
-  DISALLOW_COPY_AND_ASSIGN(CommandBufferProxy);
+  DISALLOW_COPY_AND_ASSIGN(GpuSurfaceProxy);
 };
 
 #endif  // ENABLE_GPU
 
-#endif  // CONTENT_RENDERER_COMMAND_BUFFER_PROXY_H_
+#endif  // CONTENT_RENDERER_GPU_SURFACE_PROXY_H_