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

chrome/browser/gpu_process_host.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_BROWSER_GPU_PROCESS_HOST_H_
 #define CHROME_BROWSER_GPU_PROCESS_HOST_H_
 
 #include <queue>
 
 #include "base/basictypes.h"
@@ skipping 35 matching lines @@
 
   // See documentation on MessageRouter for AddRoute and RemoveRoute
   void AddRoute(int32 routing_id, IPC::Channel::Listener* listener);
   void RemoveRoute(int32 routing_id);
 
   // Tells the GPU process to create a new channel for communication with a
   // renderer. Will asynchronously send message to object with given routing id
   // on completion.
   void EstablishGpuChannel(int renderer_id);
 
+  // Sends a reply message later when the next GpuHostMsg_SynchronizeReply comes
+  // in.
+  void Synchronize(int renderer_id, IPC::Message* reply);
+
  private:
   friend struct DefaultSingletonTraits<GpuProcessHost>;
 
   // Used to queue pending channel requests.
   struct ChannelRequest {
     explicit ChannelRequest(int renderer_id) : renderer_id(renderer_id) {}
     // Used to identify the renderer. The ID is used instead of a pointer to
     // the RenderProcessHost in case it is destroyed while the request is
     // pending.
     // TODO(apatrick): investigate whether these IDs are used for future
     // render processes.
     int renderer_id;
   };
 
   GpuProcessHost();
   virtual ~GpuProcessHost();
 
   void OnControlMessageReceived(const IPC::Message& message);
 
   // Message handlers.
   void OnChannelEstablished(const IPC::ChannelHandle& channel_handle);
+  void OnSynchronizeReply(int renderer_id);
 
   void ReplyToRenderer(int renderer_id,
                        const IPC::ChannelHandle& channel);
 
   // These are the channel requests that we have already sent to
   // the GPU process, but haven't heard back about yet.
   std::queue<ChannelRequest> sent_requests_;
 
   // Copies applicable command line switches from the given |browser_cmd| line
   // flags to the output |gpu_cmd| line flags. Not all switches will be
@@ skipping 10 matching lines @@
   int last_routing_id_;
 
   MessageRouter router_;
 
   // Messages we queue while waiting for the process handle.  We queue them here
   // instead of in the channel so that we ensure they're sent after init related
   // messages that are sent once the process handle is available.  This is
   // because the queued messages may have dependencies on the init messages.
   std::queue<IPC::Message*> queued_messages_;
 
+  // The pending synchronization requests we need to reply to.
+  std::queue<IPC::Message*> queued_synchronization_replies_;
+
   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 };
 
 #endif  // CHROME_BROWSER_GPU_PROCESS_HOST_H_