Compile chrome://settings, part 7. 33 errors left

chrome/browser/resources/options/language_dictionary_overlay.js

 // Copyright (c) 2012 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.
 
 cr.define('options', function() {
   /** @const */ var DictionaryWordsList =
       options.dictionary_words.DictionaryWordsList;
   /** @const */ var Page = cr.ui.pageManager.Page;
   /** @const */ var PageManager = cr.ui.pageManager.PageManager;
 
@@ skipping 31 matching lines @@
      * The paragraph of text that indicates that search returned no results.
      * @type {HTMLElement}
      * @private
      */
     noMatchesLabel_: null,
 
     /** @override */
     initializePage: function() {
       Page.prototype.initializePage.call(this);
 
-      this.wordList_ = $('language-dictionary-overlay-word-list');
-      DictionaryWordsList.decorate(this.wordList_);
+      var wordList = $('language-dictionary-overlay-word-list');
+      DictionaryWordsList.decorate(wordList);
+      this.wordList_ = assertInstanceof(wordList, DictionaryWordsList);
       this.wordList_.onWordListChanged = function() {
         this.onWordListChanged_();
       }.bind(this);
 
       this.searchField_ = $('language-dictionary-overlay-search-field');
       this.searchField_.onsearch = function(e) {
         this.wordList_.search(e.currentTarget.value);
       }.bind(this);
       this.searchField_.onkeydown = function(e) {
         // Don't propagate enter key events. Otherwise the default button will
@@ skipping 43 matching lines @@
   };
 
   EditDictionaryOverlay.getWordListForTesting = function() {
     return EditDictionaryOverlay.getInstance().wordList_;
   };
 
   return {
     EditDictionaryOverlay: EditDictionaryOverlay
   };
 });