[DevTools] Migrate checkbox label to a proper web component

third_party/WebKit/Source/devtools/front_end/audits/AuditLauncherView.js

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 191 matching lines @@
     this._currentCategoriesCount += event.target.checked ? 1 : -1;
     this._selectAllCheckboxElement.checked = this._currentCategoriesCount === this._sortedCategories.length;
     this._selectedCategoriesUpdated(true);
   }
 
   /**
    * @param {string} title
    * @param {string=} id
    */
   _createCategoryElement(title, id) {
-    var labelElement = UI.createCheckboxLabel(title);
+    var labelElement = UI.CheckboxLabel.create(title);
     if (id) {
       labelElement.id = this._categoryIdPrefix + id;
       labelElement.checkboxElement.addEventListener('click', this._boundCategoryClickListener, false);
     }
-    labelElement.__displayName = title;
-
+    /** @type {!Object} */ (labelElement).__displayName = title;
     return labelElement;
   }
 
   _createLauncherUI() {
     this._headerElement = createElement('h1');
     this._headerElement.textContent = Common.UIString('Select audits to run');
 
     this._contentElement.removeChildren();
     this._contentElement.appendChild(this._headerElement);
 
@@ skipping 59 matching lines @@
     this._updateButton();
   }
 
   _updateButton() {
     this._launchButton.textContent = this._auditRunning ? Common.UIString('Stop') : Common.UIString('Run');
     this._launchButton.disabled = !this._currentCategoriesCount;
   }
 };
 
 Audits.AuditLauncherView.AllCategoriesKey = '__AllCategories';