[DevTools] Do not expose agents on Target

third_party/WebKit/Source/devtools/front_end/security/SecurityModel.js

 // Copyright 2015 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
  */
 Security.SecurityModel = class extends SDK.SDKModel {
   /**
    * @param {!SDK.Target} target
+   * @param {!Protocol.Dispatcher} dispatcher
    */
-  constructor(target) {
-    super(target);
-    this._dispatcher = new Security.SecurityDispatcher(this);
-    this._securityAgent = target.securityAgent();
-    target.registerSecurityDispatcher(this._dispatcher);
+  constructor(target, dispatcher) {
+    super(target, dispatcher);
+    this._securityAgent = dispatcher.securityAgent();
+    dispatcher.registerSecurityDispatcher(new Security.SecurityDispatcher(this));
     this._securityAgent.enable();
   }
 
   /**
    * @return {!SDK.ResourceTreeModel}
    */
   resourceTreeModel() {
     return /** @type {!SDK.ResourceTreeModel} */ (this.target().model(SDK.ResourceTreeModel));
   }
 
@@ skipping 92 matching lines @@
 
   /**
    * @override
    * @param {number} eventId
    * @param {string} errorType
    * @param {string} requestURL
    */
   certificateError(eventId, errorType, requestURL) {
   }
 };