Stop cast streaming API without start

chrome/test/data/extensions/api_test/cast_streaming/stop_no_start.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var rtpStream = chrome.cast.streaming.rtpStream;
 var tabCapture = chrome.tabCapture;
 var udpTransport = chrome.cast.streaming.udpTransport;
 var createSession = chrome.cast.streaming.session.create;
 var pass = chrome.test.callbackPass;
 
 chrome.test.runTests([
-  function rtpStreamStart() {
-    console.log("[TEST] rtpStreamStart");
+  function stopNoStart() {
+    console.log("[TEST] stopNoStart");
     tabCapture.capture({audio: true, video: true},
                        pass(function(stream) {
       console.log("Got MediaStream.");
       chrome.test.assertTrue(!!stream);
       createSession(stream.getAudioTracks()[0],
                     stream.getVideoTracks()[0],
                     pass(function(stream, audioId, videoId, udpId) {
-        console.log("Starting.");
-        var stateMachine = new TestStateMachine(stream,
-                                                audioId,
-                                                videoId,
-                                                udpId);
-        var audioParams = rtpStream.getSupportedParams(audioId)[0];
-        chrome.test.assertEq(audioParams.payload.codecName, "OPUS");
-        var expectError = function(id, message) {
-          chrome.test.assertEq("Destination not set.", message);
-          chrome.test.succeed();
-        }
-        console.log("Starting RTP stream before setting destination.");
-        rtpStream.onError.addListener(expectError);
-        rtpStream.start(audioId, audioParams);
+        chrome.test.assertTrue(audioId > 0);
+        chrome.test.assertTrue(videoId > 0);
+        chrome.test.assertTrue(udpId > 0);
+        rtpStream.stop(audioId);
+        rtpStream.stop(videoId);
+        rtpStream.destroy(audioId);
+        rtpStream.destroy(videoId);
+        udpTransport.destroy(udpId);
+        chrome.test.succeed();
       }.bind(null, stream)));
     }));
   },
 ]);