[DevTools] Do not inherit SDK.DOMNode from SDK.SDKObject

third_party/WebKit/Source/devtools/front_end/elements/ElementStatePaneWidget.js

 // Copyright (c) 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.
 /**
  * @unrestricted
  */
 Elements.ElementStatePaneWidget = class extends UI.Widget {
   constructor() {
     super();
     this.element.className = 'styles-element-state-pane';
     this.element.createChild('div').createTextChild(Common.UIString('Force element state'));
     var table = createElementWithClass('table', 'source-code');
 
     var inputs = [];
     this._inputs = inputs;
 
     /**
      * @param {!Event} event
      */
     function clickListener(event) {
       var node = UI.context.flavor(SDK.DOMNode);
       if (!node)
         return;
-      SDK.CSSModel.fromNode(node).forcePseudoState(node, event.target.state, event.target.checked);
+      node.domModel().cssModel().forcePseudoState(node, event.target.state, event.target.checked);
     }
 
     /**
      * @param {string} state
      * @return {!Element}
      */
     function createCheckbox(state) {
       var td = createElement('td');
       var label = UI.createCheckboxLabel(':' + state);
       var input = label.checkboxElement;
@@ skipping 37 matching lines @@
   }
 
   _update() {
     if (!this.isShowing())
       return;
 
     var node = UI.context.flavor(SDK.DOMNode);
     if (node)
       node = node.enclosingElementOrSelf();
 
-    this._updateModel(node ? SDK.CSSModel.fromNode(node) : null);
+    this._updateModel(node ? node.domModel().cssModel() : null);
     if (node) {
-      var nodePseudoState = SDK.CSSModel.fromNode(node).pseudoState(node);
+      var nodePseudoState = node.domModel().cssModel().pseudoState(node);
       for (var input of this._inputs) {
         input.disabled = !!node.pseudoType();
         input.checked = nodePseudoState.indexOf(input.state) >= 0;
       }
     } else {
       for (var input of this._inputs) {
         input.disabled = true;
         input.checked = false;
       }
     }
@@ skipping 18 matching lines @@
   }
 
   /**
    * @override
    * @return {!UI.ToolbarItem}
    */
   item() {
     return this._button;
   }
 };