[link-multiple-load-events.html]
  [<link> cannot request the same resource twice by touching the 'href' attribute, if its value never changes]
    expected: FAIL

  [<link> cannot request the same resource twice by touching the 'type' attribute, if its value never changes]
    expected: FAIL

  [<link> load event can fire twice for the same href resource, based on 'rel' attribute mutations]
    expected: FAIL