Added CommandBufferClient, CommandBufferStub and some IPC messages....

chrome/plugin/command_buffer_stub.h

+// Copyright (c) 2009 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 CHROME_PLUGIN_COMMAND_BUFFER_STUB_H_
+#define CHROME_PLUGIN_COMMAND_BUFFER_STUB_H_
+
+#if defined(ENABLE_GPU)
+
+#include "app/gfx/native_widget_types.h"
+#include "base/ref_counted.h"
+#include "gpu/command_buffer/service/command_buffer_service.h"
+#include "gpu/command_buffer/service/gpu_processor.h"
+#include "ipc/ipc_channel.h"
+#include "ipc/ipc_message.h"
+
+class PluginChannel;
+
+class CommandBufferService;
+
+class CommandBufferStub : public IPC::Channel::Listener,
+                          public IPC::Message::Sender {
+ public:
+  CommandBufferStub(PluginChannel* channel, gfx::NativeView view);
+
+  virtual ~CommandBufferStub();
+
+  // IPC::Channel::Listener implementation:
+  virtual void OnMessageReceived(const IPC::Message& message);
+  virtual void OnChannelError();
+
+  // IPC::Message::Sender implementation:
+  virtual bool Send(IPC::Message* msg);
+
+  int route_id() const { return route_id_; }
+
+ private:
+  // Message handlers:
+  void OnInitialize(int32 size, base::SharedMemoryHandle* ring_buffer);
+  void OnSyncOffsets(int32 put_offset, int32* get_offset);
+  void OnGetGetOffset(int32* get_offset);
+  void OnGetPutOffset(int32* put_offset);
+  void OnCreateTransferBuffer(int32 size, int32* id);
+  void OnDestroyTransferBuffer(int32 id);
+  void OnGetTransferBuffer(int32 id,
+                           base::SharedMemoryHandle* transfer_buffer);
+  void OnGetToken(int32* token);
+  void OnResetParseError(int32* parse_error);
+  void OnGetErrorStatus(bool* error_status);
+
+  scoped_refptr<PluginChannel> channel_;
+  gfx::NativeView view_;
+  int route_id_;
+  scoped_ptr<gpu::CommandBufferService> command_buffer_;
+  scoped_refptr<gpu::GPUProcessor> processor_;
+};
+
+#endif  // ENABLE_GPU
+
+#endif  // CHROME_PLUGIN_COMMAND_BUFFER_STUB_H_