[RTCCertificate-postMessage.html]
  [Check cross-origin created RTCCertificate]
    expected: FAIL
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1531875

  [Check cross-origin RTCCertificate serialization]
    expected: FAIL
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1525241

  [Check same-origin RTCCertificate serialization]
    expected: FAIL
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1525241