options: Remove a bunch of useless:

chrome/browser/resources/options/hotword_confirm_dialog.js

 // Copyright 2014 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 ConfirmDialog = options.ConfirmDialog;
   /** @const */ var SettingsDialog = options.SettingsDialog;
   /** @const */ var OptionsPage = options.OptionsPage;
 
   /**
@@ skipping 13 matching lines @@
                        'hotword-confirm-overlay',  // pageDivName
                        $('hotword-confirm-ok'),  // okButton
                        $('hotword-confirm-cancel'),  // cancelButton
                        $('hotword-search-enable').pref, // pref
                        $('hotword-search-enable').metric); // metric
 
     this.indicator = $('hotword-search-setting-indicator');
   }
 
   HotwordConfirmDialog.prototype = {
-    // Set up the prototype chain
+    // TODO(dbeam): this class should probably derive SettingsDialog again as it
+    // evily duplicates much of ConfirmDialog's functionality, calls methods
+    // on SettingsDialog.prototype, and shadows private method names.
     __proto__: ConfirmDialog.prototype,
 
     /**
      * Handle changes to |pref|. Only uncommitted changes are relevant as these
      * originate from user and need to be explicitly committed to take effect.
      * Pop up the dialog if there are no errors from the indicator or commit the
      * change, depending on whether confirmation is needed.
      * @param {Event} event Change event.
      * @private
      */
     onPrefChanged_: function(event) {
       if (!event.value.uncommitted)
         return;
 
       if (event.value.value && !this.confirmed_) {
         if (!this.indicator.errorText) {
           OptionsPage.showPageByName(this.name, false);
         } else {
           this.indicator.updateBasedOnError();
           this.handleCancel();
         }
       } else {
         Preferences.getInstance().commitPref(this.pref, this.metric);
       }
     },
 
     /**
      * Override the initializePage function so that an updated version of
      * onPrefChanged_ can be used.
-     * @override */
+     * @override
+     */
     initializePage: function() {
       SettingsDialog.prototype.initializePage.call(this);
 
       this.okButton.onclick = this.handleConfirm.bind(this);
       this.cancelButton.onclick = this.handleCancel.bind(this);
       Preferences.getInstance().addEventListener(
           this.pref, this.onPrefChanged_.bind(this));
     }
   };
 
   return {
     HotwordConfirmDialog: HotwordConfirmDialog
   };
 });