Use std::default_delete as the default deleter for scoped_ptr.

media/renderers/mock_gpu_video_accelerator_factories.h

 // Copyright 2013 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 MEDIA_RENDERERS_MOCK_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
 #define MEDIA_RENDERERS_MOCK_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
 
+#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "media/renderers/gpu_video_accelerator_factories.h"
 #include "media/video/video_decode_accelerator.h"
 #include "media/video/video_encode_accelerator.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
-template <class T>
-class scoped_refptr;
-
 namespace base {
 class SharedMemory;
 }
 
 namespace media {
 
 class MockGpuVideoAcceleratorFactories : public GpuVideoAcceleratorFactories {
  public:
   explicit MockGpuVideoAcceleratorFactories(gpu::gles2::GLES2Interface* gles2);
   ~MockGpuVideoAcceleratorFactories() override;
@@ skipping 56 matching lines @@
   VideoPixelFormat video_frame_output_format_ = PIXEL_FORMAT_I420;
 
   bool fail_to_allocate_gpu_memory_buffer_ = false;
 
   gpu::gles2::GLES2Interface* gles2_;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_RENDERERS_MOCK_GPU_VIDEO_ACCELERATOR_FACTORIES_H_