Added a unique command buffer ID for command buffers.

ppapi/proxy/ppapi_command_buffer_proxy.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 PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
 #define PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
 
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 12 matching lines @@
 namespace proxy {
 
 class SerializedHandle;
 
 class PPAPI_PROXY_EXPORT PpapiCommandBufferProxy : public gpu::CommandBuffer,
                                                    public gpu::GpuControl {
  public:
   PpapiCommandBufferProxy(const HostResource& resource,
                           PluginDispatcher* dispatcher,
                           const gpu::Capabilities& capabilities,
-                          const SerializedHandle& shared_state);
+                          const SerializedHandle& shared_state,
+                          uint64_t command_buffer_id);
   ~PpapiCommandBufferProxy() override;
 
   // gpu::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;
@@ skipping 16 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, const base::Closure& callback) override;
   void SetSurfaceVisible(bool visible) override;
   uint32 CreateStreamTexture(uint32 texture_id) override;
   void SetLock(base::Lock*) override;
   bool IsGpuChannelLost() override;
+  gpu::CommandBufferNamespace GetNamespaceID() const override;
+  uint64_t GetCommandBufferID() const override;
 
  private:
   bool Send(IPC::Message* msg);
   void UpdateState(const gpu::CommandBuffer::State& state, bool success);
 
   // Try to read an updated copy of the state from shared memory.
   void TryUpdateState();
 
   // The shared memory area used to update state.
   gpu::CommandBufferSharedState* shared_state() const;
 
   void FlushInternal();
 
+  const uint64_t command_buffer_id_;
+
   gpu::Capabilities capabilities_;
   State last_state_;
   scoped_ptr<base::SharedMemory> shared_state_shm_;
 
   HostResource resource_;
   PluginDispatcher* dispatcher_;
 
   base::Closure channel_error_callback_;
 
   InstanceData::FlushInfo *flush_info_;
 
   DISALLOW_COPY_AND_ASSIGN(PpapiCommandBufferProxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif // PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_