3270         const int num_tracks = static_cast<int>(tracks_.track_entries_size());  in Finalize()
3373   if (!tracks_.AddTrack(track, number)) {  in AddTrack()
3395   if (!tracks_.AddTrack(track, number)) {  in AddVideoTrack()
3440   if (!tracks_.AddTrack(track, number)) {  in AddAudioTrack()
3526   if (!tracks_.GetTrackByNumber(frame->track_number()))  in AddGenericFrame()
3548   if (has_video_ && tracks_.TrackIsAudio(frame->track_number()) &&  in AddGenericFrame()
3710   return tracks_.GetTrackByNumber(track_number);  in GetTrackByNumber()
3756   if (!tracks_.Write(writer_header_))  in WriteSegmentHeader()
3834   if (is_key && tracks_.TrackIsVideo(track_number))  in TestFrame()
3977       for (uint32_t i = 0; i < tracks_.track_entries_size(); ++i) {  in CheckHeaderInfo()
3978         const Track* const track = tracks_.GetTrackByIndex(i);  in CheckHeaderInfo()
3982         if (tracks_.TrackIsVideo(track->number())) {  in CheckHeaderInfo()
3990         const Track* const track = tracks_.GetTrackByIndex(0);  in CheckHeaderInfo()
4002   for (uint32_t index = 0; index < tracks_.track_entries_size(); ++index) {  in UpdateDocTypeVersion()
4003     const Track* track = tracks_.GetTrackByIndex(index);  in UpdateDocTypeVersion()
4210   const int num_tracks = static_cast<int>(tracks_.track_entries_size());  in DocTypeIsWebm()
4212     const Track* const track = tracks_.GetTrackByIndex(track_index);  in DocTypeIsWebm()