[offscreencanvas.transfercontrol.to.offscreen.w.html]
  [Test that an OffscreenCanvas generated by transferControlToOffscreen gets correct width and height when it is transferred to a worker]
    expected: FAIL

  [Test that calling getContext on a placeholder canvas that is transferred its control to an OffscreenCanvas throws an exception, when the OffscreenCanvas is transferred to a worker]
    expected: FAIL

  [Test that calling transferControlToOffscreen twice throws an exception, when its associated OffscreenCanvas is transferred to a worker]
    expected: FAIL

