Added a unique command buffer ID for command buffers.

mojo/gles2/command_buffer_client_impl.h

 // Copyright 2014 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 MOJO_GLES2_COMMAND_BUFFER_CLIENT_IMPL_H_
 #define MOJO_GLES2_COMMAND_BUFFER_CLIENT_IMPL_H_
 
 #include <map>
 
 #include "base/macros.h"
@@ skipping 54 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:
   class SyncClientImpl;
   class SyncPointClientImpl;
 
   // mojo::CommandBufferLostContextObserver implementation:
   void DidLoseContext(int32_t lost_reason) override;
 
   void TryUpdateState();
   void MakeProgressAndUpdateState();
@@ skipping 15 matching lines @@
 
   // Image IDs are allocated in sequence.
   int next_image_id_;
 
   const MojoAsyncWaiter* async_waiter_;
 };
 
 }  // gles2
 
 #endif  // MOJO_GLES2_COMMAND_BUFFER_CLIENT_IMPL_H_