Added a unique command buffer ID for command buffers.

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 108 matching lines @@
   uint32 InsertSyncPoint() override;
   uint32 InsertFutureSyncPoint() override;
   void RetireSyncPoint(uint32 sync_point) override;
   void SignalSyncPoint(uint32 sync_point,
                        const base::Closure& callback) override;
   void SignalQuery(uint32 query_id, const base::Closure& callback) override;
   void SetSurfaceVisible(bool visible) override;
   uint32 CreateStreamTexture(uint32 texture_id) override;
   void SetLock(base::Lock*) override;
   bool IsGpuChannelLost() override;
+  CommandBufferNamespace GetNamespaceID() const override;
+  uint64_t GetCommandBufferID() const override;
 
   // The serializer interface to the GPU service (i.e. thread).
   class Service {
    public:
     Service();
     virtual ~Service();
 
     virtual void AddRef() const = 0;
     virtual void Release() const = 0;
 
@@ skipping 82 matching lines @@
   void DestroyImageOnGpuThread(int32 id);
   void SetGetBufferOnGpuThread(int32 shm_id, base::WaitableEvent* completion);
 
   // Callbacks:
   void OnContextLost();
   void OnResizeView(gfx::Size size, float scale_factor);
   bool GetBufferChanged(int32 transfer_buffer_id);
   void PumpCommands();
   void PerformDelayedWork();
 
+  const uint64_t command_buffer_id_;
+
   // Members accessed on the gpu thread (possibly with the exception of
   // creation):
   bool context_lost_;
   scoped_refptr<TransferBufferManagerInterface> transfer_buffer_manager_;
   scoped_ptr<GpuScheduler> gpu_scheduler_;
   scoped_ptr<gles2::GLES2Decoder> decoder_;
   scoped_refptr<gfx::GLContext> context_;
   scoped_refptr<gfx::GLSurface> surface_;
   base::Closure context_lost_callback_;
   bool delayed_work_pending_;  // Used to throttle PerformDelayedWork.
@@ skipping 55 matching lines @@
   SyncPointManager* sync_point_manager_;  // Non-owning.
   scoped_refptr<gpu::gles2::ShaderTranslatorCache> shader_translator_cache_;
   scoped_refptr<gpu::gles2::FramebufferCompletenessCache>
       framebuffer_completeness_cache_;
   DISALLOW_COPY_AND_ASSIGN(GpuInProcessThread);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_IN_PROCESS_COMMAND_BUFFER_H_