Add browser test to connect chormium sink to remote tracks, verify that no crash.

BUG=396447

Review URL: https://codereview.chromium.org/417203002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285808 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/media/webrtc_browsertest.cc

@@ -208,6 +208,11 @@ IN_PROC_BROWSER_TEST_F(WebRtcBrowserTest, MAYBE_CanForwardRemoteStream720p) {
   MakeTypicalPeerConnectionCall(javascript);
 }
 
+IN_PROC_BROWSER_TEST_F(WebRtcBrowserTest,
+                       NoCrashWhenConnectChromiumSinkToRemoteTrack) {
+  MakeTypicalPeerConnectionCall("ConnectChromiumSinkToRemoteAudioTrack();");
+}
+
 // This test will make a complete PeerConnection-based call but remove the
 // MSID and bundle attribute from the initial offer to verify that
 // video is playing for the call even if the initiating client don't support

content/test/data/media/peerconnection-call.html

@@ -136,6 +136,30 @@
     detectVideoPlaying('remote-view-2', onRemoteStream2);
   }
 
+  // First makes a call between pc1 and pc2, and then construct a new media
+  // stream using the remote audio and video tracks, connect the new media
+  // stream to a video element. These operations should not crash Chrome.
+  function ConnectChromiumSinkToRemoteAudioTrack() {
+    createConnections(null);
+    navigator.webkitGetUserMedia({audio: true, video: true},
+                                 addStreamToBothConnectionsAndNegotiate,
+                                 printGetUserMediaError);
+
+    detectVideoPlaying('remote-view-2', function() {
+      // Construct a new media stream with remote tracks.
+      var newStream = new webkitMediaStream();
+      newStream.addTrack(
+          gSecondConnection.getRemoteStreams()[0].getAudioTracks()[0]);
+      newStream.addTrack(
+          gSecondConnection.getRemoteStreams()[0].getVideoTracks()[0]);
+      var videoElement = document.createElement('video');
+
+      // No crash for this operation.
+      videoElement.src = URL.createObjectURL(newStream);
+      waitForVideo('remote-view-2');
+    });
+  }
+  
   // Test that we can setup call with an audio and video track and
   // simulate that the remote peer don't support MSID.
   function callWithoutMsidAndBundle() {