convert //gpu to std::unique_ptr

gpu/command_buffer/service/gpu_tracer.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.
 
 // This file contains the GPUTrace class.
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_
 
 #include <stdint.h>
 
 #include <deque>
+#include <memory>
 #include <stack>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "gpu/gpu_export.h"
 
 namespace gfx {
   class GPUTimingClient;
   class GPUTimer;
 }
 
@@ skipping 158 matching lines @@
   ~GPUTrace();
 
   void Output();
 
   friend class base::RefCounted<GPUTrace>;
 
   const GpuTracerSource source_ = kTraceGroupInvalid;
   const std::string category_;
   const std::string name_;
   scoped_refptr<Outputter> outputter_;
-  scoped_ptr<gfx::GPUTimer> gpu_timer_;
+  std::unique_ptr<gfx::GPUTimer> gpu_timer_;
   const bool service_enabled_ = false;
   const bool device_enabled_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(GPUTrace);
 };
 
 class ScopedGPUTrace {
  public:
   ScopedGPUTrace(GPUTracer* gpu_tracer,
                  GpuTracerSource source,
                  const std::string& category,
                  const std::string& name)
       : gpu_tracer_(gpu_tracer), source_(source) {
     gpu_tracer_->Begin(category, name, source_);
   }
 
   ~ScopedGPUTrace() { gpu_tracer_->End(source_); }
 
  private:
   GPUTracer* gpu_tracer_;
   GpuTracerSource source_;
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_