MD Settings: Cleanup, remove obsolete dependencies.

chrome/browser/resources/settings/device_page/display_layout.js

 // Copyright 2016 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
  * 'display-layout' presents a visual representation of the layout of one or
  * more displays and allows them to be arranged.
  */
 
@@ skipping 161 matching lines @@
    * @param {!chrome.system.display.DisplayUnitInfo} selectedDisplay
    * @return {boolean}
    * @private
    */
   isSelected_: function(display, selectedDisplay) {
     return display.id == selectedDisplay.id;
   },
 
   /**
    * @param {!{model: !{item: !chrome.system.display.DisplayUnitInfo},
-   *     target: !PaperButtonElement}} e
+   *     target: !HTMLDivElement}} e
    * @private
    */
   onSelectDisplayTap_: function(e) {
     this.fire('select-display', e.model.item.id);
     // Force active in case the selected display was clicked.
+    // TODO(dpapad): Ask @stevenjb, why are we setting 'active' on a div?
     e.target.active = true;
   },
 
   /**
    * @param {string} id
    * @param {?DragPosition} amount
    */
-  onDrag_(id, amount) {
+  onDrag_: function(id, amount) {
     id = id.substr(1);  // Skip prefix
 
     var newBounds;
     if (!amount) {
       this.finishUpdateDisplayBounds(id);
       newBounds = this.getCalculatedDisplayBounds(id);
     } else {
       // Make sure the dragged display is also selected.
       if (id != this.selectedDisplay.id)
         this.fire('select-display', id);
@@ skipping 11 matching lines @@
     var top =
         this.visualOffset_.top + Math.round(newBounds.top * this.visualScale);
     var div = this.$$('#_' + id);
     div.style.left = '' + left + 'px';
     div.style.top = '' + top + 'px';
   },
 
 });
 
 })();