Remove enabled/set_enabled from DemuxerStream interface

media/base/media_resource.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/media_resource.h"
 
 namespace media {
 
 MediaResource::MediaResource() {}
 
 MediaResource::~MediaResource() {}
 
 MediaUrlParams MediaResource::GetMediaUrlParams() const {
   NOTREACHED();
   return MediaUrlParams{GURL(), GURL()};
 }
 
 MediaResource::Type MediaResource::GetType() const {
   return STREAM;
 }
 
 DemuxerStream* MediaResource::GetFirstStream(DemuxerStream::Type type) {
   const auto& streams = GetAllStreams();
   for (const auto& stream : streams) {
-    if (stream->type() == type && stream->enabled())
+    if (stream->type() == type)
       return stream;
   }
   return nullptr;
 }
 
 }  // namespace media