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

media/audio/win/audio_low_latency_input_win.h

Index: media/audio/win/audio_low_latency_input_win.h
diff --git a/media/audio/win/audio_low_latency_input_win.h b/media/audio/win/audio_low_latency_input_win.h
index eceb89a552626882bd858875f2f7f3ba9a2c05d7..a07691072fb6031c274f192f5ccf3ded93f022de 100644
--- a/media/audio/win/audio_low_latency_input_win.h
+++ b/media/audio/win/audio_low_latency_input_win.h
@@ -61,6 +61,7 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <memory>
 #include <string>
 
 #include "base/compiler_specific.h"
@@ -204,7 +205,7 @@ class MEDIA_EXPORT WASAPIAudioInputStream
 
   // Extra audio bus used for storage of deinterleaved data for the OnData
   // callback.
-  scoped_ptr<media::AudioBus> audio_bus_;
+  std::unique_ptr<media::AudioBus> audio_bus_;
 
   DISALLOW_COPY_AND_ASSIGN(WASAPIAudioInputStream);
 };