[per-global.window.html]
  [Navigating from the initial about:blank must not replace window.navigator]
    expected: FAIL

  [Discarding the browsing context must not change window.clientInformation]
    expected: FAIL

  [Navigating from the initial about:blank must not replace window.clientInformation]
    expected: FAIL

  [document.open() must replace window.clientInformation]
    expected: FAIL

  [document.open() must not replace window.clientInformation]
    expected: FAIL