Convert //chromecast from scoped_ptr to std::unique_ptr

chromecast/media/cma/backend/alsa/stream_mixer_alsa_input.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_STREAM_MIXER_ALSA_INPUT_H_
 #define CHROMECAST_MEDIA_CMA_BACKEND_ALSA_STREAM_MIXER_ALSA_INPUT_H_
 
+#include <memory>
+
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "chromecast/media/cma/backend/alsa/media_pipeline_backend_alsa.h"
 
 namespace chromecast {
 namespace media {
 
 class DecoderBufferBase;
 class StreamMixerAlsaInputImpl;
 
 // Input handle to the mixer. All methods (including constructor and destructor)
@@ skipping 42 matching lines @@
   StreamMixerAlsaInputImpl* impl_;
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(StreamMixerAlsaInput);
 };
 
 }  // namespace media
 }  // namespace chromecast
 
 #endif  // CHROMECAST_MEDIA_CMA_BACKEND_ALSA_STREAM_MIXER_ALSA_INPUT_H_