media: Create Mojo StructTraits for VideoFrame

media/mojo/clients/mojo_decryptor.h

Index: media/mojo/clients/mojo_decryptor.h
diff --git a/media/mojo/clients/mojo_decryptor.h b/media/mojo/clients/mojo_decryptor.h
index 8b889574c4fa90acc45795947849a1021eaf3850..e51ba71b7aa3eda3bd046f2ad8931b41668f3d87 100644
--- a/media/mojo/clients/mojo_decryptor.h
+++ b/media/mojo/clients/mojo_decryptor.h
@@ -63,7 +63,7 @@ class MojoDecryptor : public Decryptor {
                       std::vector<mojom::AudioBufferPtr> audio_buffers);
   void OnVideoDecoded(const VideoDecodeCB& video_decode_cb,
                       Status status,
-                      mojom::VideoFramePtr video_frame,
+                      const scoped_refptr<VideoFrame>& video_frame,
                       mojom::FrameResourceReleaserPtr releaser);
 
   base::ThreadChecker thread_checker_;