Added command buffer implementation of WebGL which runs in the sandbox....

chrome/renderer/render_thread.h

 // Copyright (c) 2010 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_RENDERER_RENDER_THREAD_H_
 #define CHROME_RENDERER_RENDER_THREAD_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 154 matching lines @@
   void SetCacheMode(bool enabled);
 
   // Update the list of active extensions that will be reported when we crash.
   void UpdateActiveExtensions();
 
   // Asynchronously establish a channel to the GPU plugin if not previously
   // established or if it has been lost (for example if the GPU plugin crashed).
   // Use GetGpuChannel() to determine when the channel is ready for use.
   void EstablishGpuChannel();
 
+  // Synchronously establish a channel to the GPU plugin if not previously
+  // established or if it has been lost (for example if the GPU plugin crashed).
+  // If there is a pending asynchronous request, it will be completed by the
+  // time this routine returns.
+  GpuChannelHost* EstablishGpuChannelSync();
+
   // Get the GPU channel. Returns NULL if the channel is not established or
   // has been lost.
   GpuChannelHost* GetGpuChannel();
 
  private:
   virtual void OnControlMessageReceived(const IPC::Message& msg);
 
   void Init();
 
   void OnUpdateVisitedLinks(base::SharedMemoryHandle table);
@@ skipping 116 matching lines @@
   // not idle, to ensure that IdleHandle gets called eventually.
   base::RepeatingTimer<RenderThread> forced_idle_timer_;
 
   // The channel from the renderer process to the GPU process.
   scoped_refptr<GpuChannelHost> gpu_channel_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThread);
 };
 
 #endif  // CHROME_RENDERER_RENDER_THREAD_H_