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

third_party/WebKit/Source/devtools/front_end/animation/AnimationModel.js

 // Copyright (c) 2014 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
  */
 Animation.AnimationModel = class extends SDK.SDKModel {
   /**
    * @param {!SDK.Target} target
@@ skipping 330 matching lines @@
    */
   _updateNodeStyle(duration, delay, node) {
     var animationPrefix;
     if (this.type() === Animation.AnimationModel.Animation.Type.CSSTransition)
       animationPrefix = 'transition-';
     else if (this.type() === Animation.AnimationModel.Animation.Type.CSSAnimation)
       animationPrefix = 'animation-';
     else
       return;
 
-    var cssModel = node.target().model(SDK.CSSModel);
-    if (!cssModel)
-      return;
+    var cssModel = node.domModel().cssModel();
     cssModel.setEffectivePropertyValueForNode(node.id, animationPrefix + 'duration', duration + 'ms');
     cssModel.setEffectivePropertyValueForNode(node.id, animationPrefix + 'delay', delay + 'ms');
   }
 
   /**
    * @return {!Promise.<?SDK.RemoteObject>}
    */
   remoteObjectPromise() {
     /**
      * @param {?Protocol.Error} error
@@ skipping 474 matching lines @@
     delete this._stopTimer;
     delete this._endTime;
     this._requests = [];
     this._capturing = false;
     this._screenCaptureModel.stopScreencast();
   }
 };
 
 /** @typedef {{ endTime: number, screenshots: !Array.<string>}} */
 Animation.AnimationModel.ScreenshotCapture.Request;