JS cleanup for cr_elements

ui/webui/resources/cr_elements/cr_toggle_button/cr_toggle_button.js

-/* Copyright 2015 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. */
+// Copyright 2015 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
  * `cr-toggle-button` provides a switch the user can toggle on or off by
  * tapping or by dragging. Wraps a `paper-toggle-button`.
  *
  * Example:
  *
  *    <cr-toggle-button></cr-toggle-button>
  *
  * @element cr-toggle-button
  */
 Polymer({
   publish: {
     /**
      * Gets or sets the state. `true` is checked and `false` is unchecked.
      *
      * @attribute checked
      * @type boolean
      * @default false
      */
     checked: {
       value: false,
       reflect: true,
     },
 
-
     /**
      * If true, the toggle button is disabled.
      *
      * @attribute disabled
      * @type boolean
      * @default false
      */
     disabled: {
       value: false,
       reflect: true,
     },
   },
 
   ready: function() {
     this.$.events.forward(this.$.button, ['change']);
   },
 });