[explicitly-closed.tentative.window.html]
  expected: TIMEOUT
  [Close event on port2 is fired when port1 is explicitly closed]
    expected: TIMEOUT

  [Close event on port2 is fired when port1, which is in a different window, is explicitly closed.]
    expected: TIMEOUT

  [Close event on port2 is fired when port1, in a different window, is closed during the transfer of port2.]
    expected: NOTRUN