[Devtools] Template fromTarget() function calls to model

third_party/WebKit/Source/devtools/front_end/sdk/ResourceTreeModel.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 45 matching lines @@
     this._pendingReloadOptions = null;
     this._reloadSuspensionCount = 0;
     this._isInterstitialShowing = false;
   }
 
   /**
    * @param {!SDK.Target} target
    * @return {?SDK.ResourceTreeModel}
    */
   static fromTarget(target) {
-    return /** @type {?SDK.ResourceTreeModel} */ (target.model(SDK.ResourceTreeModel));
+    return target.model(SDK.ResourceTreeModel);
   }
 
   /**
    * @return {!Array.<!SDK.ResourceTreeFrame>}
    */
   static frames() {
     var result = [];
     for (var target of SDK.targetManager.targets(SDK.Target.Capability.DOM))
       result = result.concat(SDK.ResourceTreeModel.fromTarget(target)._frames.valuesArray());
     return result;
@@ skipping 802 matching lines @@
     this._resourceTreeModel.dispatchEventToListeners(SDK.ResourceTreeModel.Events.InterstitialHidden);
   }
 
   /**
    * @override
    */
   navigationRequested() {
     // Frontend is not interested in when navigations are requested.
   }
 };