Handle authentication failures in the v2 app by restarting the app

remoting/webapp/js_proto/dom_proto.js

Index: remoting/webapp/js_proto/dom_proto.js
diff --git a/remoting/webapp/js_proto/dom_proto.js b/remoting/webapp/js_proto/dom_proto.js
index 24f58d9c891b8d4413fe67982cffe4723687929e..518bebccf02cb31ae3b1b3356240d530ef0ebb50 100644
--- a/remoting/webapp/js_proto/dom_proto.js
+++ b/remoting/webapp/js_proto/dom_proto.js
@@ -52,6 +52,11 @@ Element.prototype.checked;
 /** @type {Window} */
 HTMLIFrameElement.prototype.contentWindow;
 
+/**
+ * @param {string} selector
+ * @return {?HTMLElement}.
+ */
+HTMLElement.prototype.querySelector = function(selector) {};
 
 /**
  * @param {string} name
@@ -114,6 +119,11 @@ Event.prototype.initMouseEvent = function(
 /** @type {Object} */
 Event.prototype.data = {};
 
+/**
+ * @param {*} value
+ * @return {boolean} whether value is an integer or not.
+ */
+Number.isInteger = function(value) {};
 
 // Chrome implements XMLHttpRequest.responseURL starting from Chrome 37.
 /** @type {string} */