Add OrderingBarrierCHROMIUM API.

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 <map>
 #include <vector>
 
@@ skipping 74 matching lines @@
                   InProcessCommandBuffer* share_group,
                   GpuMemoryBufferManager* gpu_memory_buffer_manager,
                   ImageFactory* image_factory);
   void Destroy();
 
   // CommandBuffer implementation:
   bool Initialize() override;
   State GetLastState() override;
   int32 GetLastToken() override;
   void Flush(int32 put_offset) override;
+  void OrderingBarrier(int32 put_offset) override;
   void WaitForTokenInRange(int32 start, int32 end) override;
   void WaitForGetOffsetInRange(int32 start, int32 end) override;
   void SetGetBuffer(int32 shm_id) override;
   scoped_refptr<gpu::Buffer> CreateTransferBuffer(size_t size,
                                                   int32* id) override;
   void DestroyTransferBuffer(int32 id) override;
   gpu::error::Error GetLastError() override;
 
   // GpuControl implementation:
   gpu::Capabilities GetCapabilities() override;
@@ skipping 148 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_