[RTCPeerConnection-setRemoteDescription-rollback.html]
  [explicit rollback of local offer should remove transceivers and transport]
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1307996
    expected: FAIL

  [rollback of a local offer to negotiated stable state should enable applying of a remote offer]
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1307996
    expected: FAIL

  [rollback of a remote offer with stream changes]
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1510802
    expected: FAIL


