Resync Loop's webapp.js with webapp.jsx - fallout from bug 1120003. rs=mikedeboer

browser/components/loop/standalone/content/js/webapp.js

@@ -19,6 +19,7 @@ loop.webapp = (function($, _, OT, mozL10n) {
   var sharedModels = loop.shared.models;
   var sharedViews = loop.shared.views;
   var sharedUtils = loop.shared.utils;
+  var WEBSOCKET_REASONS = loop.shared.utils.WEBSOCKET_REASONS;
 
   var multiplexGum = loop.standaloneMedia.multiplexGum;
 
@@ -892,7 +893,7 @@ loop.webapp = (function($, _, OT, mozL10n) {
     _handleCallTerminated: function(reason) {
       multiplexGum.reset();
 
-      if (reason === "cancel") {
+      if (reason === WEBSOCKET_REASONS.CANCEL) {
         this.setState({callStatus: "start"});
         return;
       }