Revert of [DevTools] Migrate security handler to new generator.

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
    */
@@ skipping 79 matching lines @@
  * @unrestricted
  */
 Security.SecurityDispatcher = class {
   constructor(model) {
     this._model = model;
   }
 
   /**
    * @override
    * @param {!Protocol.Security.SecurityState} securityState
-   * @param {!Array<!Protocol.Security.SecurityStateExplanation>} explanations
-   * @param {!Protocol.Security.InsecureContentStatus} insecureContentStatus
-   * @param {boolean} schemeIsCryptographic
+   * @param {!Array<!Protocol.Security.SecurityStateExplanation>=} explanations
+   * @param {!Protocol.Security.InsecureContentStatus=} insecureContentStatus
+   * @param {boolean=} schemeIsCryptographic
    */
   securityStateChanged(securityState, explanations, insecureContentStatus, schemeIsCryptographic) {
-    var pageSecurityState =
-        new Security.PageSecurityState(securityState, explanations, insecureContentStatus, schemeIsCryptographic);
+    var pageSecurityState = new Security.PageSecurityState(
+        securityState, explanations || [], insecureContentStatus || null, schemeIsCryptographic || false);
     this._model.dispatchEventToListeners(Security.SecurityModel.Events.SecurityStateChanged, pageSecurityState);
   }
 };