[Devtools] Template fromTarget() function calls to model

third_party/WebKit/Source/devtools/front_end/resources/IndexedDBModel.js

 /*
  * Copyright (C) 2012 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 126 matching lines @@
     if (idbKeyPath instanceof Array)
       return '["' + idbKeyPath.join('", "') + '"]';
     return null;
   }
 
   /**
    * @param {!SDK.Target} target
    * @return {!Resources.IndexedDBModel}
    */
   static fromTarget(target) {
-    var model = /** @type {?Resources.IndexedDBModel} */ (target.model(Resources.IndexedDBModel));
+    var model = target.model(Resources.IndexedDBModel);
     if (!model)
       model = new Resources.IndexedDBModel(target, SDK.SecurityOriginManager.fromTarget(target));
     return model;
   }
 
   enable() {
     if (this._enabled)
       return;
 
     this._agent.enable();
@@ skipping 374 matching lines @@
   }
 
   /**
    * @return {string}
    */
   get keyPathString() {
     return /** @type {string}*/ (
         Resources.IndexedDBModel.keyPathStringFromIDBKeyPath(/** @type {string}*/ (this.keyPath)));
   }
 };