media: Use native DemuxerStream enum types in media mojo interfaces

media/mojo/clients/mojo_demuxer_stream_impl.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_MOJO_CLIENTS_MOJO_DEMUXER_STREAM_IMPL_H_
 #define MEDIA_MOJO_CLIENTS_MOJO_DEMUXER_STREAM_IMPL_H_
 
 #include <memory>
 
 #include "base/callback_forward.h"
@@ skipping 25 matching lines @@
   void Read(const ReadCallback& callback) override;
   void EnableBitstreamConverter() override;
 
   // Sets an error handler that will be called if a connection error occurs on
   // the bound message pipe.
   void set_connection_error_handler(const base::Closure& error_handler) {
     binding_.set_connection_error_handler(error_handler);
   }
 
  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_;
 
   // See constructor.  We do not own |stream_|.
   media::DemuxerStream* stream_;
 
   std::unique_ptr<MojoDecoderBufferWriter> mojo_decoder_buffer_writer_;
 
   base::WeakPtrFactory<MojoDemuxerStreamImpl> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(MojoDemuxerStreamImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_CLIENTS_MOJO_DEMUXER_STREAM_IMPL_H_