[MediaStream-in-dedicated-worker.https.html]
  [MediaStream, MediaStreamTrack and MediaStreamTrackEvent are exposed in a dedicated worker]
    expected: FAIL

  [An empty MediaStream can be constructed in a dedicated worker]
    expected: FAIL

  [A MediaStream can be constructed from transferred tracks in a dedicated worker]
    expected: FAIL

  [A MediaStream can be constructed from another MediaStream in a dedicated worker]
    expected: FAIL

  [MediaStream.getTrackById() works in a dedicated worker]
    expected: FAIL

  [MediaStream.addTrack() and removeTrack() work in a dedicated worker]
    expected: FAIL

  [MediaStream.clone() works in a dedicated worker]
    expected: FAIL

  [MediaStreamTrackEvent can be constructed in a dedicated worker]
    expected: FAIL

  [A MediaStream in a dedicated worker becomes inactive when its tracks are stopped]
    expected: FAIL