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

media/audio/win/waveout_output_win.h

Index: media/audio/win/waveout_output_win.h
diff --git a/media/audio/win/waveout_output_win.h b/media/audio/win/waveout_output_win.h
index 11c64ac10bb1c60b357c6a3514fce51004baa7b2..76d81eab3a78a029a03471079a1df255268b4869 100644
--- a/media/audio/win/waveout_output_win.h
+++ b/media/audio/win/waveout_output_win.h
@@ -11,8 +11,9 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "base/win/scoped_handle.h"
 #include "media/audio/audio_io.h"
@@ -127,13 +128,13 @@ class PCMWaveOutAudioOutputStream : public AudioOutputStream {
 
   // Pointer to the allocated audio buffers, we allocate all buffers in one big
   // chunk. This object owns them.
-  scoped_ptr<char[]> buffers_;
+  std::unique_ptr<char[]> buffers_;
 
   // Lock used to avoid the conflict when callbacks are called simultaneously.
   base::Lock lock_;
 
   // Container for retrieving data from AudioSourceCallback::OnMoreData().
-  scoped_ptr<AudioBus> audio_bus_;
+  std::unique_ptr<AudioBus> audio_bus_;
 
   DISALLOW_COPY_AND_ASSIGN(PCMWaveOutAudioOutputStream);
 };