media: Use native DemuxerStream enum types in media mojo interfaces

media/mojo/clients/mojo_demuxer_stream_impl.h

Index: media/mojo/clients/mojo_demuxer_stream_impl.h
diff --git a/media/mojo/clients/mojo_demuxer_stream_impl.h b/media/mojo/clients/mojo_demuxer_stream_impl.h
index 5c284f4716b4618e1e206e136e26b7415ad66b1d..684c2629b3dabe555e19f48b6327fdcfd1a50fb3 100644
--- a/media/mojo/clients/mojo_demuxer_stream_impl.h
+++ b/media/mojo/clients/mojo_demuxer_stream_impl.h
@@ -43,8 +43,11 @@ class MojoDemuxerStreamImpl : public mojom::DemuxerStream {
   }
 
  private:
+  using Type = media::DemuxerStream::Type;
+  using Status = media::DemuxerStream::Status;
+
   void OnBufferReady(const ReadCallback& callback,
-                     media::DemuxerStream::Status status,
+                     Status status,
                      const scoped_refptr<media::DecoderBuffer>& buffer);
 
   mojo::Binding<mojom::DemuxerStream> binding_;