gpu: Reuse transfer buffers more aggresively

gpu/command_buffer/service/in_process_command_buffer.h

 // Copyright 2013 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 GPU_COMMAND_BUFFER_SERVICE_IN_PROCESS_COMMAND_BUFFER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_IN_PROCESS_COMMAND_BUFFER_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 84 matching lines @@
   virtual State GetLastState() OVERRIDE;
   virtual int32 GetLastToken() OVERRIDE;
   virtual void Flush(int32 put_offset) OVERRIDE;
   virtual State FlushSync(int32 put_offset, int32 last_known_get) OVERRIDE;
   virtual void SetGetBuffer(int32 shm_id) OVERRIDE;
   virtual void SetGetOffset(int32 get_offset) OVERRIDE;
   virtual gpu::Buffer CreateTransferBuffer(size_t size, int32* id) OVERRIDE;
   virtual void DestroyTransferBuffer(int32 id) OVERRIDE;
   virtual gpu::Buffer GetTransferBuffer(int32 id) OVERRIDE;
   virtual void SetToken(int32 token) OVERRIDE;
+  virtual void SetSerial(uint32 token) OVERRIDE;
   virtual void SetParseError(gpu::error::Error error) OVERRIDE;
   virtual void SetContextLostReason(
       gpu::error::ContextLostReason reason) OVERRIDE;
   virtual gpu::error::Error GetLastError() OVERRIDE;
 
   // GpuControl implementation:
   virtual gpu::Capabilities GetCapabilities() OVERRIDE;
   virtual gfx::GpuMemoryBuffer* CreateGpuMemoryBuffer(
       size_t width,
       size_t height,
@@ skipping 106 matching lines @@
 
   base::WeakPtr<InProcessCommandBuffer> gpu_thread_weak_ptr_;
   base::WeakPtrFactory<InProcessCommandBuffer> gpu_thread_weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessCommandBuffer);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_IN_PROCESS_COMMAND_BUFFER_H_