MD Settings: Lazy-load sub-pages.

chrome/browser/resources/settings/languages_page/languages_page.js

 // Copyright 2015 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 'settings-languages-page' is the settings page
  * for language and input method settings.
  */
 (function() {
 'use strict';
 
 Polymer({
   is: 'settings-languages-page',
 
+  behaviors: [
+    I18nBehavior,
+  ],
+
   properties: {
     /**
      * The current active route.
      */
     currentRoute: {
       type: Object,
       notify: true,
     },
 
     /**
@@ skipping 130 matching lines @@
    * HACK(michaelpg): This is necessary to show the list when navigating to
    * the sub-page. Remove this function when PolymerElements/neon-animation#60
    * is fixed.
    * @param {string} tagName Name of the element containing the <iron-list>.
    */
   forceRenderList_: function(tagName) {
     this.$$(tagName).$$('iron-list').fire('iron-resize');
   },
 });
 })();