fix(JingleSessionPC): Add a workaround for chrome issue.

The 'signalingstatechange' event for 'stable' is fired after the 'iceconnectionstatechange' event for 'completed' is fired on chrome in Unified plan. This prevents the client from switching the media connection to the p2p connection once the ice connection for p2p gets established.

modules/xmpp/JingleSessionPC.js

@@ -449,6 +449,7 @@ export default class JingleSessionPC extends JingleSession {
          */
         this.peerconnection.oniceconnectionstatechange = () => {
             const now = window.performance.now();
+            let isStable = false;
 
             if (!this.isP2P) {
                 this.room.connectionTimes[
@@ -479,6 +480,7 @@ export default class JingleSessionPC extends JingleSession {
                 // Informs interested parties that the connection has been restored. This includes the case when
                 // media connection to the bridge has been restored after an ICE failure by using session-terminate.
                 if (this.peerconnection.signalingState === 'stable') {
+                    isStable = true;
                     const usesTerminateForRestart = !this.options.enableIceRestart
                         && this.room.supportsRestartByTerminate();
 
@@ -488,7 +490,17 @@ export default class JingleSessionPC extends JingleSession {
                     }
                 }
 
-                if (!this.wasConnected && this.wasstable) {
+                // Add a workaround for an issue on chrome in Unified plan when the local endpoint is the offerer.
+                // The 'signalingstatechange' event for 'stable' is handled after the 'iceconnectionstatechange' event
+                // for 'completed' is handled by the client. This prevents the client from firing a
+                // CONNECTION_ESTABLISHED event for the p2p session. As a result, the offerer continues to stay on the
+                // jvb connection while the remote peer switches to the p2p connection breaking the media flow between
+                // the endpoints.
+                // TODO - file a chromium bug and add the information here.
+                if (!this.wasConnected
+                    && (this.wasstable
+                        || isStable
+                        || (this.usesUnifiedPlan && this.isInitiator && browser.isChromiumBased()))) {
 
                     Statistics.sendAnalytics(
                         ICE_DURATION,