Disallow top-level navigation in gaia iframe

chrome/browser/resources/inline_login/inline_login.js

 // Copyright 2013 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.
 
 /**
  * @fileoverview Inline login UI.
  */
 
 <include src="../gaia_auth_host/gaia_auth_host.js"></include>
 
 cr.define('inline.login', function() {
   'use strict';
 
   /**
    * The auth extension host instance.
    * @type {Object}
    */
   var authExtHost;
 
   /**
+   * Whether the auth ready event has been fired, for testing purpose.
+   */
+  var authReadyFired;
+
+  /**
    * Handler of auth host 'ready' event.
    */
   function onAuthReady() {
     $('contents').classList.toggle('loading', false);
+    authReadyFired = true;
   }
 
   /**
    * Handler of auth host 'completed' event.
    * @param {!Object} credentials Credentials of the completed authentication.
    */
   function onAuthCompleted(credentials) {
     chrome.send('completeLogin', [credentials]);
     $('contents').classList.toggle('loading', true);
   }
@@ skipping 27 matching lines @@
 
   /**
    * Invoked when failed to get oauth2 refresh token.
    */
   function handleOAuth2TokenFailure() {
     // TODO(xiyuan): Show an error UI.
     authExtHost.reload();
     $('contents').classList.toggle('loading', true);
   }
 
+  /**
+   * Returns the auth host instance, for testing purpose.
+   */
+  function getAuthExtHost() {
+    return authExtHost;
+  }
+
+  /**
+   * Returns whether the auth UI is ready, for testing purpose.
+   */
+  function isAuthReady() {
+    return authReadyFired;
+  }
+
   return {
+    getAuthExtHost: getAuthExtHost,
+    isAuthReady: isAuthReady,
     initialize: initialize,
     loadAuthExtension: loadAuthExtension,
     closeDialog: closeDialog,
     handleOAuth2TokenFailure: handleOAuth2TokenFailure
   };
 });
 
 document.addEventListener('DOMContentLoaded', inline.login.initialize);