[current-time-nan.html]
  [currentTime should be null for a display: none scrollSource]
    expected: FAIL

  [currentTime should be null for a display: inline scrollSource]
    expected: FAIL

  [currentTime should be null when the scrollSource is not a scroller]
    expected: FAIL

  [currentTime should be null for an unattached scrollSource]
    expected: FAIL