[Devtools] Template fromTarget() function calls to model

third_party/WebKit/Source/devtools/front_end/sdk/SubTargetsManager.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.SubTargetsManager = class extends SDK.SDKModel {
   /**
    * @param {!SDK.Target} target
    */
@@ skipping 19 matching lines @@
       this._agent.setDiscoverTargets(true);
     }
     SDK.targetManager.addEventListener(SDK.TargetManager.Events.MainFrameNavigated, this._mainFrameNavigated, this);
   }
 
   /**
    * @param {!SDK.Target} target
    * @return {?SDK.SubTargetsManager}
    */
   static fromTarget(target) {
-    return /** @type {?SDK.SubTargetsManager} */ (target.model(SDK.SubTargetsManager));
+    return target.model(SDK.SubTargetsManager);
   }
 
   /**
    * @override
    * @return {!Promise}
    */
   suspendModel() {
     var fulfill;
     var promise = new Promise(f => fulfill = f);
     this._agent.setAutoAttach(true /* autoAttach */, false /* waitForDebuggerOnStart */, fulfill);
@@ skipping 401 matching lines @@
     this._attachedCallback = null;
   }
 
   /**
    * @return {boolean}
    */
   canConnect() {
     return this._isRemote;
   }
 };