AudioTrack* AudioTrackList::getTrackById(const AtomicString& id) const
{
    for (size_t i = 0; i < m_inbandTracks.size(); ++i) {
        AudioTrack* track = toAudioTrack(m_inbandTracks[i].get());
        if (track->id() == id)
            return track;
    }
    return 0;
}