media: Discard the previous decoder immediately on fallback

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 069bcb28fb92aba5134f796610461b4d21a43576..ce341699752dc9e91901a163569d3699ed7cc9bc 100644
--- a/media/base/video_frame_metadata.h
+++ b/media/base/video_frame_metadata.h
@@ -42,12 +42,6 @@ class MEDIA_EXPORT VideoFrameMetadata {
     // contexts.
     COPY_REQUIRED,
 
-    // Indicates that the frame is owned by the decoder and that destroying the
-    // decoder will make the frame unrenderable. TODO(sandersd): Remove once OSX
-    // and Windows hardware decoders support frames which outlive the decoder.
-    // http://crbug.com/595716 and http://crbug.com/602708.
-    DECODER_OWNS_FRAME,
-
     // Indicates if the current frame is the End of its current Stream. Use
     // Get/SetBoolean() for this Key.
     END_OF_STREAM,