[window-simple-success.html]
  [postMessaging to a dedicated worker allows them to instantiate]
    expected: FAIL

  [postMessaging to a same-origin iframe allows them to instantiate]
    expected: FAIL

  [postMessaging to a same-origin deeply-nested iframe allows them to instantiate]
    expected: FAIL

  [postMessaging to a same-origin opened window allows them to instantiate]
    expected: FAIL