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

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

Index: third_party/WebKit/Source/devtools/front_end/security/SecurityModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/security/SecurityModel.js b/third_party/WebKit/Source/devtools/front_end/security/SecurityModel.js
index 66aa0d393130a7092d522a32dc68e5170e976d1b..f1d91a77fcf4ad9116d763030bd583db249fb9b1 100644
--- a/third_party/WebKit/Source/devtools/front_end/security/SecurityModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/security/SecurityModel.js
@@ -97,13 +97,13 @@
   /**
    * @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);
   }
 };