[RTCPeerConnection-addTransceiver-renegotiation.https.html]
  bug: 1709960
  expected:
    if (os == "android") and debug: [OK, TIMEOUT, CRASH]
    if (os == "android") and not debug: [OK, TIMEOUT]
    if os == "mac": [OK, TIMEOUT]
  [Audio flows to RTCPeerConnection's second transceiver added through renegotiation, with first transceiver also sending]
    expected:
      if (os == "linux") and not fission and not debug: [PASS, FAIL]
      if (os == "mac"): [PASS, FAIL]
      if (os == "mac") and not debug: [PASS, FAIL]

  [Video flows to RTCPeerConnection's second transceiver added through renegotiation, with first transceiver also sending]
    expected:
      if (os == "mac"): [PASS, FAIL]
      if (os == "mac") and not debug: [PASS, FAIL]

  [Video flows to RTCPeerConnection's second transceiver added through renegotiation, with first transceiver inactive]
    expected:
      if (os == "mac"): [PASS, FAIL]
      if (os == "mac") and not debug: [PASS, FAIL]

  [Audio flows to RTCPeerConnection's second transceiver added through renegotiation, with first transceiver inactive]
    expected:
      if (os == "mac"): [PASS, FAIL]
      if (os == "mac") and not debug: [PASS, FAIL]