Fix gpu acceleration with --in-process-gpu

content/browser/gpu/gpu_thread_host.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_BROWSER_GPU_GPU_THREAD_HOST_H_
+#define CONTENT_BROWSER_GPU_GPU_THREAD_HOST_H_
+#pragma once
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/browser/gpu/gpu_message_hub.h"
+
+class GpuChannelManager;
+
+// This class connects the GPuMessageHub to the GpuThread, when running
+// in single-process or in-process-gpu mode.
+class GpuThreadHost : public IPC::Message::Sender {
+ public:
+  // Since will ever only be a single GPU thread, this returns the singleton
+  // instance for this class.
+  static GpuThreadHost* GetInstance();
+
+  static void Destroy();
+
+  // IPC::Message::Sender implementation used to forward messages to the
+  // GPU thread.
+  virtual bool Send(IPC::Message* message);
+
+  GpuMessageHub* GetMessageHub() { return message_hub_.get(); }
+
+ private:
+  GpuThreadHost();
+  ~GpuThreadHost();
+
+  template<class T> friend class DeleteTask;
+
+  GpuChannelManager* gpu_channel_manager_;
+
+  // This member handles incoming messages from the GPU process that
+  // are either going to the UI thread or are replies to the renderer.
+  scoped_ptr<GpuMessageHub> message_hub_;
+
+  IPC::Channel::Sender* browser_sender_;
+
+  static GpuThreadHost* g_instance;
+
+  DISALLOW_COPY_AND_ASSIGN(GpuThreadHost);
+};
+
+#endif  // CONTENT_BROWSER_GPU_GPU_THREAD_HOST_H_