Generate and assign media track ids in demuxers.

third_party/WebKit/Source/core/html/track/AudioTrack.cpp

 // 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 "core/html/track/AudioTrack.h"
 
 #include "core/html/HTMLMediaElement.h"
 
 namespace blink {
 
@@ skipping 13 matching lines @@
 }
 
 void AudioTrack::setEnabled(bool enabled)
 {
     if (enabled == m_enabled)
         return;
 
     m_enabled = enabled;
 
     if (mediaElement())
-        mediaElement()->audioTrackChanged(trackId(), enabled);
+        mediaElement()->audioTrackChanged(id(), enabled);
 }
 
 const AtomicString& AudioTrack::alternativeKeyword()
 {
     DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("alternative"));
     return keyword;
 }
 
 const AtomicString& AudioTrack::descriptionsKeyword()
 {
@@ skipping 30 matching lines @@
     return kind == alternativeKeyword()
         || kind == descriptionsKeyword()
         || kind == mainKeyword()
         || kind == mainDescriptionsKeyword()
         || kind == translationKeyword()
         || kind == commentaryKeyword()
         || kind == emptyAtom;
 }
 
 } // namespace blink