Convert //chromecast from scoped_ptr to std::unique_ptr

chromecast/media/cma/backend/alsa/audio_decoder_alsa.h

 // Copyright 2015 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 CHROMECAST_MEDIA_CMA_BACKEND_ALSA_AUDIO_DECODER_ALSA_H_
 #define CHROMECAST_MEDIA_CMA_BACKEND_ALSA_AUDIO_DECODER_ALSA_H_
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "chromecast/media/cma/backend/alsa/stream_mixer_alsa_input.h"
@@ skipping 56 matching lines @@
 
   MediaPipelineBackendAlsa* const backend_;
   const scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   MediaPipelineBackend::Decoder::Delegate* delegate_;
 
   Statistics stats_;
   bool is_eos_;
   bool error_;
 
   AudioConfig config_;
-  scoped_ptr<CastAudioDecoder> decoder_;
+  std::unique_ptr<CastAudioDecoder> decoder_;
 
   int64_t current_pts_;
   int64_t last_buffer_pts_;
 
-  scoped_ptr<StreamMixerAlsaInput> mixer_input_;
+  std::unique_ptr<StreamMixerAlsaInput> mixer_input_;
   RenderingDelay last_known_delay_;
   float volume_multiplier_;
 
   base::WeakPtrFactory<AudioDecoderAlsa> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioDecoderAlsa);
 };
 
 }  // namespace media
 }  // namespace chromecast
 
 #endif  // CHROMECAST_MEDIA_CMA_BACKEND_ALSA_AUDIO_DECODER_ALSA_H_