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

media/audio/audio_input_writer.h

Index: media/audio/audio_input_writer.h
diff --git a/media/audio/audio_input_writer.h b/media/audio/audio_input_writer.h
index 938baf11b71f4be6c58535772306403931a23ea3..42ca0ba42d6e43c10445261355d6e4bc0f00d4f6 100644
--- a/media/audio/audio_input_writer.h
+++ b/media/audio/audio_input_writer.h
@@ -5,7 +5,7 @@
 #ifndef MEDIA_AUDIO_AUDIO_INPUT_WRITER_H_
 #define MEDIA_AUDIO_AUDIO_INPUT_WRITER_H_
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
 
 namespace media {
 
@@ -18,7 +18,7 @@ class AudioInputWriter {
   virtual ~AudioInputWriter() {}
 
   // Write |data| to file.
-  virtual void Write(scoped_ptr<AudioBus> data) = 0;
+  virtual void Write(std::unique_ptr<AudioBus> data) = 0;
 };
 
 }  // namspace media