[DevTools] Remove SDKModels' fromTarget methods

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

 // Copyright 2014 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.ServiceWorkerCacheModel = class extends SDK.SDKModel {
   /**
    * Invariant: This model can only be constructed on a ServiceWorker target.
    * @param {!SDK.Target} target
    */
   constructor(target) {
     super(target);
 
     /** @type {!Map<string, !SDK.ServiceWorkerCacheModel.Cache>} */
     this._caches = new Map();
 
     this._agent = target.cacheStorageAgent();
 
-    this._securityOriginManager = SDK.SecurityOriginManager.fromTarget(target);
+    this._securityOriginManager = target.model(SDK.SecurityOriginManager);
 
     /** @type {boolean} */
     this._enabled = false;
   }
 
-  /**
-   * @param {!SDK.Target} target
-   * @return {?SDK.ServiceWorkerCacheModel}
-   */
-  static fromTarget(target) {
-    return target.model(SDK.ServiceWorkerCacheModel);
-  }
-
   enable() {
     if (this._enabled)
       return;
 
     this._securityOriginManager.addEventListener(
         SDK.SecurityOriginManager.Events.SecurityOriginAdded, this._securityOriginAdded, this);
     this._securityOriginManager.addEventListener(
         SDK.SecurityOriginManager.Events.SecurityOriginRemoved, this._securityOriginRemoved, this);
 
     for (var securityOrigin of this._securityOriginManager.securityOrigins())
@@ skipping 267 matching lines @@
   }
 
   /**
    * @override
    * @return {string}
    */
   toString() {
     return this.securityOrigin + this.cacheName;
   }
 };