Replace scoped_ptr with std::unique_ptr in //media/base.

media/base/audio_buffer_converter.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 MEDIA_BASE_AUDIO_BUFFER_CONVERTER
 #define MEDIA_BASE_AUDIO_BUFFER_CONVERTER
 
 #include <deque>
+#include <memory>
 
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "media/base/audio_converter.h"
 #include "media/base/audio_parameters.h"
 #include "media/base/audio_timestamp_helper.h"
 #include "media/base/media_export.h"
 
 namespace media {
 
 class AudioBuffer;
 class AudioBus;
@@ skipping 71 matching lines @@
   double io_sample_rate_ratio_;
 
   // Computes timestamps in terms of the output sample rate.
   AudioTimestampHelper timestamp_helper_;
 
   // Are we flushing everything, without regard for providing AudioConverter
   // full AudioBuses in ProvideInput()?
   bool is_flushing_;
 
   // The AudioConverter which does the real work here.
-  scoped_ptr<AudioConverter> audio_converter_;
+  std::unique_ptr<AudioConverter> audio_converter_;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_AUDIO_BUFFER_CONVERTER