[RTCDataChannel-send.html]
  [Datachannel send() up to max size should succeed, above max size should fail]
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1278299
    expected: FAIL

  [Negotiated datachannel send() up to max size should succeed, above max size should fail]
    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1278299
    expected: FAIL