files / testing / web-platform / tests / html / semantics / embedded-content / media-elements / interfaces
| Mode | Name | Size |
| d--------- | HTMLElement/ | - |
| d--------- | TextTrack/ | - |
| d--------- | TextTrackCue/ | - |
| d--------- | TextTrackCueList/ | - |
| d--------- | TextTrackList/ | - |
| d--------- | TrackEvent/ | - |