Convert //chromecast from scoped_ptr to std::unique_ptr

chromecast/media/cma/backend/alsa/cast_media_shlib.cc

 // 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.
 
 #include <alsa/asoundlib.h>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/files/scoped_file.h"
 #include "base/logging.h"
@@ skipping 65 matching lines @@
     snd_ctl_elem_value_set_id(g_rate_offset_ppm, g_rate_offset_id);
   } else {
     LOG(ERROR) << "snd_hctl_find_elem failed to find the rate offset element.";
   }
 }
 
 DefaultVideoPlane* g_video_plane = nullptr;
 
 base::AtExitManager g_at_exit_manager;
 
-scoped_ptr<base::ThreadTaskRunnerHandle> g_thread_task_runner_handle;
+std::unique_ptr<base::ThreadTaskRunnerHandle> g_thread_task_runner_handle;
 
 }  // namespace
 
 void CastMediaShlib::Initialize(const std::vector<std::string>& argv) {
   base::CommandLine::Init(0, nullptr);
   base::CommandLine::ForCurrentProcess()->InitFromArgv(argv);
 
   g_video_plane = new DefaultVideoPlane();
 
   InitializeAlsaControls();
@@ skipping 98 matching lines @@
   StreamMixerAlsa::Get()->AddLoopbackAudioObserver(observer);
 }
 
 void CastMediaShlib::RemoveLoopbackAudioObserver(
     LoopbackAudioObserver* observer) {
   StreamMixerAlsa::Get()->RemoveLoopbackAudioObserver(observer);
 }
 
 }  // namespace media
 }  // namespace chromecast