[resume-timer-on-history-back.html]
  disabled:
    if os == "win": https://bugzilla.mozilla.org/show_bug.cgi?id=1321179
  [history.back() handles top level page timer correctly]
    expected:
      if os == "android": PASS
      [PASS, FAIL]

  [history.back() handles nested iframe timer correctly]
    expected:
      if debug and (os == "linux") and not fission and not swgl: [PASS, FAIL]