Replace scoped_ptr with unique_ptr in webrtc/modules/audio_device/

webrtc/modules/audio_device/dummy/file_audio_device.h

Index: webrtc/modules/audio_device/dummy/file_audio_device.h
diff --git a/webrtc/modules/audio_device/dummy/file_audio_device.h b/webrtc/modules/audio_device/dummy/file_audio_device.h
index 77179409ea25b6841db1cbdbfb5f3a51a114d6fa..be6fa3ddee1fffff202857a6c6cec8bf51358228 100644
--- a/webrtc/modules/audio_device/dummy/file_audio_device.h
+++ b/webrtc/modules/audio_device/dummy/file_audio_device.h
@@ -13,6 +13,7 @@
 
 #include <stdio.h>
 
+#include <memory>
 #include <string>
 
 #include "webrtc/modules/audio_device/audio_device_generic.h"
@@ -182,8 +183,8 @@ class FileAudioDevice : public AudioDeviceGeneric {
   size_t _playoutFramesIn10MS;
 
   // TODO(pbos): Make plain members instead of pointers and stop resetting them.
-  rtc::scoped_ptr<rtc::PlatformThread> _ptrThreadRec;
-  rtc::scoped_ptr<rtc::PlatformThread> _ptrThreadPlay;
+  std::unique_ptr<rtc::PlatformThread> _ptrThreadRec;
+  std::unique_ptr<rtc::PlatformThread> _ptrThreadPlay;
 
   bool _playing;
   bool _recording;