Revert of Added an extra sync token field for extra command buffer identification.

content/common/gpu/client/gpu_channel_host.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_CLIENT_GPU_CHANNEL_HOST_H_
 #define CONTENT_COMMON_GPU_CLIENT_GPU_CHANNEL_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 98 matching lines @@
   // routes. Combines multiple OrderingBarriers into a single AsyncFlush.
   // Returns the flush ID for the stream or 0 if put offset was not changed.
   uint32_t OrderingBarrier(int32 route_id,
                            int32 stream_id,
                            int32 put_offset,
                            uint32 flush_count,
                            const std::vector<ui::LatencyInfo>& latency_info,
                            bool put_offset_changed,
                            bool do_flush);
 
-  void FlushPendingStream(int32 stream_id);
-
   // Create and connect to a command buffer in the GPU process.
   scoped_ptr<CommandBufferProxyImpl> CreateViewCommandBuffer(
       int32 surface_id,
       CommandBufferProxyImpl* share_group,
       int32 stream_id,
       GpuStreamPriority stream_priority,
       const std::vector<int32>& attribs,
       const GURL& active_url,
       gfx::GpuPreference gpu_preference);
 
@@ skipping 174 matching lines @@
   mutable base::Lock context_lock_;
   scoped_ptr<IPC::SyncChannel> channel_;
   base::hash_map<int32, StreamFlushInfo> stream_flush_info_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuChannelHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_CLIENT_GPU_CHANNEL_HOST_H_