[popover-shadow-dom.html]
  [anchor references use the flat tree not the DOM tree]
    expected: FAIL

  [Popover ancestor relationships are within a root, not within the document]
    expected: FAIL

  [Popovers located inside shadow DOM can still be shown]
    expected:
      if not debug and (os == "android"): [PASS, FAIL]
      if not debug and (os == "linux"): [PASS, FAIL]
      if not debug and (os == "mac"): [PASS, FAIL]