options: Remove a bunch of useless:

chrome/browser/resources/options/chromeos/display_options.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() {
   var OptionsPage = options.OptionsPage;
 
   // The scale ratio of the display rectangle to its original size.
   /** @const */ var VISUAL_SCALE = 1 / 10;
 
@@ skipping 126 matching lines @@
     visualScale_: VISUAL_SCALE,
 
     /**
      * The location where the last touch event happened.  This is used to
      * prevent unnecessary dragging events happen.  Set to null unless it's
      * during touch events.
      * @private
      */
     lastTouchLocation_: null,
 
-    /**
-     * Initialize the page.
-     */
+    /** @override */
     initializePage: function() {
       OptionsPage.prototype.initializePage.call(this);
 
       $('display-options-toggle-mirroring').onclick = function() {
         this.mirroring_ = !this.mirroring_;
         chrome.send('setMirroring', [this.mirroring_]);
       }.bind(this);
 
       var container = $('display-options-displays-view-host');
       container.onmousemove = this.onMouseMove_.bind(this);
@@ skipping 717 matching lines @@
       mirroring, displays, layout, offset) {
     DisplayOptions.getInstance().onDisplayChanged_(
         mirroring, displays, layout, offset);
   };
 
   // Export
   return {
     DisplayOptions: DisplayOptions
   };
 });