Run VDA::Decode on GPU IO thread if VDA supports it.

content/common/gpu/gpu_channel.h

 // Copyright (c) 2012 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_COMMON_GPU_GPU_CHANNEL_H_
 #define CONTENT_COMMON_GPU_GPU_CHANNEL_H_
 
 #include <deque>
 #include <string>
 
@@ skipping 119 matching lines @@
 
   // Destroy channel and all contained contexts.
   void DestroySoon();
 
   // Generate a route ID guaranteed to be unique for this channel.
   int GenerateRouteID();
 
   // Called to add/remove a listener for a particular message routing ID.
   void AddRoute(int32 route_id, IPC::Listener* listener);
   void RemoveRoute(int32 route_id);
+  void AddMessageFilterRoute(int32 route_id, IPC::Listener* listener);
+  void RemoveMessageFilterRoute(int32 route_id);
 
   gpu::PreemptionFlag* GetPreemptionFlag();
 
   bool handle_messages_scheduled() const { return handle_messages_scheduled_; }
   uint64 messages_processed() const { return messages_processed_; }
 
   // If |preemption_flag->IsSet()|, any stub on this channel
   // should stop issuing GL commands. Setting this to NULL stops deferral.
   void SetPreemptByFlag(
       scoped_refptr<gpu::PreemptionFlag> preemption_flag);
@@ skipping 109 matching lines @@
   scoped_refptr<base::MessageLoopProxy> io_message_loop_;
 
   size_t num_stubs_descheduled_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuChannel);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_GPU_CHANNEL_H_