options: Remove a bunch of useless:

chrome/browser/resources/options/chromeos/pointer_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 SettingsDialog = options.SettingsDialog;
 
   /**
    * PointerOverlay class
    * Dialog that allows users to set pointer settings (touchpad/mouse).
    * @extends {SettingsDialog}
    */
   function PointerOverlay() {
     // The title is updated dynamically in the setTitle method as pointer
     // devices are discovered or removed.
     SettingsDialog.call(this, 'pointer-overlay',
                         '', 'pointer-overlay',
                         $('pointer-overlay-confirm'),
                         $('pointer-overlay-cancel'));
   }
 
   cr.addSingletonGetter(PointerOverlay);
 
   PointerOverlay.prototype = {
     __proto__: SettingsDialog.prototype,
-
-    /**
-     * Initialize the page.
-     */
-    initializePage: function() {
-      // Call base class implementation to start preference initialization.
-      SettingsDialog.prototype.initializePage.call(this);
-    },
   };
 
   /**
    * Sets the visibility state of the touchpad group.
    * @param {boolean} show True to show, false to hide.
    */
   PointerOverlay.showTouchpadControls = function(show) {
     $('pointer-section-touchpad').hidden = !show;
   };
 
@@ skipping 25 matching lines @@
       button.hidden = true;
       noPointersLabel.hidden = false;
     }
   };
 
   // Export
   return {
     PointerOverlay: PointerOverlay
   };
 });