[Devtools] Template fromTarget() function calls to model

third_party/WebKit/Source/devtools/front_end/sdk/SecurityOriginManager.js

 // Copyright 2016 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
  */
 SDK.SecurityOriginManager = class extends SDK.SDKModel {
   /**
    * @param {!SDK.Target} target
    */
   constructor(target) {
     super(SDK.SecurityOriginManager, target);
 
     this._securityOriginCounter = new Map();
     this._mainSecurityOrigin = '';
   }
 
   /**
    * @param {!SDK.Target} target
    * @return {!SDK.SecurityOriginManager}
    */
   static fromTarget(target) {
-    var securityOriginManager =
-        /** @type {?SDK.SecurityOriginManager} */ (target.model(SDK.SecurityOriginManager));
+    var securityOriginManager = target.model(SDK.SecurityOriginManager);
     if (!securityOriginManager)
       securityOriginManager = new SDK.SecurityOriginManager(target);
     return securityOriginManager;
   }
 
   /**
    * @param {string} securityOrigin
    */
   addSecurityOrigin(securityOrigin) {
     var currentCount = this._securityOriginCounter.get(securityOrigin);
@@ skipping 40 matching lines @@
     this.dispatchEventToListeners(SDK.SecurityOriginManager.Events.MainSecurityOriginChanged, securityOrigin);
   }
 };
 
 /** @enum {symbol} */
 SDK.SecurityOriginManager.Events = {
   SecurityOriginAdded: Symbol('SecurityOriginAdded'),
   SecurityOriginRemoved: Symbol('SecurityOriginRemoved'),
   MainSecurityOriginChanged: Symbol('MainSecurityOriginChanged')
 };