[RTCPeerConnection-setRemoteDescription-offer.html]
  [setRemoteDescription(offer) with invalid SDP should reject with RTCError]
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1527916
    expected: FAIL

  [setRemoteDescription(invalidOffer) from have-local-offer does not undo rollback]
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1527916
    expected: FAIL

