[RTCPeerConnection-setLocalDescription-parameterless.https.html]
  [Parameterless SLD() uses [[LastCreatedAnswer\]\] if it is still valid]
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1055080
    expected: FAIL

  [Parameterless SLD() uses [[LastCreatedOffer\]\] if it is still valid]
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1055080
    expected: FAIL