[navigator-window-controls-overlay.tentative.html]
  [the windowControlsOverlay object should exist on the navigator object]
    expected: FAIL

  [visible should be a member of the windowControlsOverlay object]
    expected: FAIL

  [visible should be false]
    expected: FAIL

  [getTitlebarAreaRect should be a method of the windowControlsOverlay object]
    expected: FAIL

  [getTitlebarAreaRect return type should be DOMRect]
    expected: FAIL

  [getTitlebarAreaRect should return a empty DOMRect]
    expected: FAIL

  [ongeometrychange should be a member of the windowControlsOverlay object]
    expected: FAIL