var videoParams = rtpStream.getSupportedParams(videoId)[0];
chrome.test.assertTrue(!!audioParams.payload.codecName);
chrome.test.assertTrue(!!videoParams.payload.codecName);
+ udpTransport.setOptions(udpId, {DSCP: true});
udpTransport.setDestination(udpId,
{address: "127.0.0.1", port: 2344});
rtpStream.onStarted.addListener(