Convert //media/audio from scoped_ptr to std::unique_ptr

media/audio/mac/audio_device_listener_mac_unittest.cc

Index: media/audio/mac/audio_device_listener_mac_unittest.cc
diff --git a/media/audio/mac/audio_device_listener_mac_unittest.cc b/media/audio/mac/audio_device_listener_mac_unittest.cc
index a714ea05bd74551722d93710b3c067e709fd7ca8..06894c819e9318a936ded1b5a10e1b8e4966cfa9 100644
--- a/media/audio/mac/audio_device_listener_mac_unittest.cc
+++ b/media/audio/mac/audio_device_listener_mac_unittest.cc
@@ -2,14 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "media/audio/mac/audio_device_listener_mac.h"
+
 #include <CoreAudio/AudioHardware.h>
 
+#include <memory>
+
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
-#include "media/audio/mac/audio_device_listener_mac.h"
 #include "media/base/bind_to_current_loop.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -71,7 +73,7 @@ class AudioDeviceListenerMacTest : public testing::Test {
 
  protected:
   base::MessageLoop message_loop_;
-  scoped_ptr<AudioDeviceListenerMac> output_device_listener_;
+  std::unique_ptr<AudioDeviceListenerMac> output_device_listener_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioDeviceListenerMacTest);
 };