convert //gpu to std::unique_ptr

gpu/command_buffer/service/transfer_buffer_manager.h

Index: gpu/command_buffer/service/transfer_buffer_manager.h
diff --git a/gpu/command_buffer/service/transfer_buffer_manager.h b/gpu/command_buffer/service/transfer_buffer_manager.h
index 884316054f16c2cf038a4d08a82263772222789b..3b640ffa3293a444e391be31a7926f7b86fad291 100644
--- a/gpu/command_buffer/service/transfer_buffer_manager.h
+++ b/gpu/command_buffer/service/transfer_buffer_manager.h
@@ -26,8 +26,9 @@ class MemoryTracker;
 class GPU_EXPORT TransferBufferManagerInterface :
     public base::RefCounted<TransferBufferManagerInterface> {
  public:
-  virtual bool RegisterTransferBuffer(int32_t id,
-                                      scoped_ptr<BufferBacking> buffer) = 0;
+  virtual bool RegisterTransferBuffer(
+      int32_t id,
+      std::unique_ptr<BufferBacking> buffer) = 0;
   virtual void DestroyTransferBuffer(int32_t id) = 0;
   virtual scoped_refptr<Buffer> GetTransferBuffer(int32_t id) = 0;
 
@@ -50,7 +51,7 @@ class GPU_EXPORT TransferBufferManager
   bool Initialize();
   bool RegisterTransferBuffer(
       int32_t id,
-      scoped_ptr<BufferBacking> buffer_backing) override;
+      std::unique_ptr<BufferBacking> buffer_backing) override;
   void DestroyTransferBuffer(int32_t id) override;
   scoped_refptr<Buffer> GetTransferBuffer(int32_t id) override;