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

chrome/renderer/render_thread.cc

 // 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.
 
 #include "chrome/renderer/render_thread.h"
 
 #include <v8.h>
 
 #include <algorithm>
 #include <limits>
@@ skipping 685 matching lines @@
       gpu_channel_ = NULL;
   }
 
   if (!gpu_channel_.get())
     gpu_channel_ = new GpuChannelHost;
 
   // Ask the browser for the channel name.
   Send(new ViewHostMsg_EstablishGpuChannel());
 }
 
+GpuChannelHost* RenderThread::EstablishGpuChannelSync() {
+  EstablishGpuChannel();
+  Send(new ViewHostMsg_SynchronizeGpu());
+  // TODO(kbr): the GPU channel is still in the unconnected state at this point.
+  // Need to figure out whether it is really safe to return it.
+  return gpu_channel_.get();
+}
+
 GpuChannelHost* RenderThread::GetGpuChannel() {
   if (!gpu_channel_.get())
     return NULL;
 
   if (gpu_channel_->state() != GpuChannelHost::CONNECTED)
     return NULL;
 
   return gpu_channel_.get();
 }
 
@@ skipping 267 matching lines @@
 #endif
 
   if (channel_handle.name.size() != 0) {
     // Connect to the GPU process if a channel name was received.
     gpu_channel_->Connect(channel_handle.name);
   } else {
     // Otherwise cancel the connection.
     gpu_channel_ = NULL;
   }
 }