Replace scoped_ptr with std::unique_ptr in //media/base.

media/base/video_frame_metadata.h

Index: media/base/video_frame_metadata.h
diff --git a/media/base/video_frame_metadata.h b/media/base/video_frame_metadata.h
index 1f6cd3539f35096fa956fe210718fad7ff632f15..543c71d9f45c84ccd20bfc454d97c132dee94f82 100644
--- a/media/base/video_frame_metadata.h
+++ b/media/base/video_frame_metadata.h
@@ -5,11 +5,11 @@
 #ifndef MEDIA_BASE_VIDEO_FRAME_METADATA_H_
 #define MEDIA_BASE_VIDEO_FRAME_METADATA_H_
 
+#include <memory>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "media/base/media_export.h"
@@ -123,7 +123,7 @@ class MEDIA_EXPORT VideoFrameMetadata {
   void SetString(Key key, const std::string& value);
   void SetTimeDelta(Key key, const base::TimeDelta& value);
   void SetTimeTicks(Key key, const base::TimeTicks& value);
-  void SetValue(Key key, scoped_ptr<base::Value> value);
+  void SetValue(Key key, std::unique_ptr<base::Value> value);
 
   // Getters.  Returns true if |key| is present, and its value has been set.
   bool GetBoolean(Key key, bool* value) const WARN_UNUSED_RESULT;