convert //gpu to std::unique_ptr

content/common/gpu/media/v4l2_image_processor.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_V4L2_IMAGE_PROCESSOR_H_
 #define CONTENT_COMMON_GPU_MEDIA_V4L2_IMAGE_PROCESSOR_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
+#include <memory>
 #include <queue>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/media/v4l2_device.h"
@@ skipping 156 matching lines @@
 
   // Weak factory for producing weak pointers on the device_thread_
   base::WeakPtrFactory<V4L2ImageProcessor> device_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(V4L2ImageProcessor);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_V4L2_IMAGE_PROCESSOR_H_