[DevTools] Remove SDKModels' fromTarget methods

third_party/WebKit/Source/devtools/front_end/layers/LayersPanel.js

 /*
  * Copyright (C) 2013 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 82 matching lines @@
     super.willHide();
   }
 
   /**
    * @override
    * @param {!SDK.Target} target
    */
   targetAdded(target) {
     if (this._model)
       return;
-    this._model = Layers.LayerTreeModel.fromTarget(target);
+    this._model = target.model(Layers.LayerTreeModel);
     if (!this._model)
       return;
     this._model.addEventListener(Layers.LayerTreeModel.Events.LayerTreeChanged, this._onLayerTreeUpdated, this);
     this._model.addEventListener(Layers.LayerTreeModel.Events.LayerPainted, this._onLayerPainted, this);
     if (this.isShowing())
       this._model.enable();
   }
 
   /**
    * @override
@@ skipping 75 matching lines @@
    */
   _onScaleChanged(event) {
     this._paintProfilerView.setScale(/** @type {number} */ (event.data));
   }
 };
 
 Layers.LayersPanel.DetailsViewTabs = {
   Details: 'details',
   Profiler: 'profiler'
 };