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

media/audio/win/audio_device_listener_win.h

Index: media/audio/win/audio_device_listener_win.h
diff --git a/media/audio/win/audio_device_listener_win.h b/media/audio/win/audio_device_listener_win.h
index bce24c774dd6eda02925816249320dccb42bf16d..75f6bccb9a554a3c42eb8afbbe821fa1bdbc83b6 100644
--- a/media/audio/win/audio_device_listener_win.h
+++ b/media/audio/win/audio_device_listener_win.h
@@ -6,11 +6,12 @@
 #define MEDIA_AUDIO_WIN_AUDIO_DEVICE_LISTENER_WIN_H_
 
 #include <MMDeviceAPI.h>
+
+#include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "base/win/scoped_comptr.h"
@@ -66,7 +67,7 @@ class MEDIA_EXPORT AudioDeviceListenerWin : public IMMNotificationClient {
   // AudioDeviceListenerWin must be constructed and destructed on one thread.
   base::ThreadChecker thread_checker_;
 
-  scoped_ptr<base::TickClock> tick_clock_;
+  std::unique_ptr<base::TickClock> tick_clock_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioDeviceListenerWin);
 };