convert //gpu to std::unique_ptr

content/common/gpu/media/vaapi_video_encode_accelerator.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 CONTENT_COMMON_GPU_MEDIA_VAAPI_VIDEO_ENCODE_ACCELERATOR_H_
 #define CONTENT_COMMON_GPU_MEDIA_VAAPI_VIDEO_ENCODE_ACCELERATOR_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <list>
+#include <memory>
 #include <queue>
 
 #include "base/macros.h"
 #include "base/memory/linked_ptr.h"
 #include "base/threading/thread.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/media/h264_dpb.h"
 #include "content/common/gpu/media/va_surface.h"
 #include "content/common/gpu/media/vaapi_wrapper.h"
 #include "media/filters/h264_bitstream_buffer.h"
@@ skipping 235 matching lines @@
   // thread (it's a member of this class).
   base::WeakPtr<VaapiVideoEncodeAccelerator> weak_this_;
   base::WeakPtrFactory<VaapiVideoEncodeAccelerator> weak_this_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VaapiVideoEncodeAccelerator);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_VAAPI_VIDEO_ENCODE_ACCELERATOR_H_