Add GetUrl to DemuxerStreamProvider interface

media/base/demuxer_stream_provider.cc

 // 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.
 
 #include "media/base/demuxer_stream_provider.h"
 
 namespace media {
 
 DemuxerStreamProvider::DemuxerStreamProvider() {}
 
 DemuxerStreamProvider::~DemuxerStreamProvider() {}
 
+GURL DemuxerStreamProvider::GetUrl() const {
+  NOTREACHED();
+  return GURL();
+}
+
+DemuxerStreamProvider::Type DemuxerStreamProvider::GetType() const {
+  return STREAM;
+}
+
 }  // namespace media