[send-response-event-order.htm]
  disabled:
    if os == "win": https://bugzilla.mozilla.org/show_bug.cgi?id=1370056
  expected:
    if (os == "android") and fission: [OK, TIMEOUT]
  [XMLHttpRequest: The send() method: event order when synchronous flag is unset]
    expected:
      if (os == "mac") and debug: [PASS, FAIL]