Convert media/formats to std::unique_ptr

media/formats/webm/webm_stream_parser.h

Index: media/formats/webm/webm_stream_parser.h
diff --git a/media/formats/webm/webm_stream_parser.h b/media/formats/webm/webm_stream_parser.h
index 78f14976e79a88ac3e75a571906afbfdaa16b361..0259e083302d7945daa3e6168ec27bf5340cb36f 100644
--- a/media/formats/webm/webm_stream_parser.h
+++ b/media/formats/webm/webm_stream_parser.h
@@ -7,6 +7,8 @@
 
 #include <stdint.h>
 
+#include <memory>
+
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
@@ -82,7 +84,7 @@ class MEDIA_EXPORT WebMStreamParser : public StreamParser {
 
   bool unknown_segment_size_;
 
-  scoped_ptr<WebMClusterParser> cluster_parser_;
+  std::unique_ptr<WebMClusterParser> cluster_parser_;
   ByteQueue byte_queue_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMStreamParser);