[munge-dont.html]
  [RTCSessionDescription.type is read-only]
    expected: FAIL

  [RTCSessionDescription.sdp is read-only]
    expected: FAIL

  [RTCIceCandidate.candidate is read-only]
    expected: FAIL

  [Rejects SDP munging between createOffer and setLocalDescription]
    expected: FAIL

  [Rejects SDP munging between createAnswer and setLocalDescription]
    expected: FAIL