Override DevTools security summary when a Safe Browsing warning shows.

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 55 matching lines @@
   SecurityStateChanged: Symbol('SecurityStateChanged')
 };
 
 
 /**
  * @unrestricted
  */
 Security.PageSecurityState = class {
   /**
    * @param {!Protocol.Security.SecurityState} securityState
+   * @param {boolean} schemeIsCryptographic
    * @param {!Array<!Protocol.Security.SecurityStateExplanation>} explanations
    * @param {?Protocol.Security.InsecureContentStatus} insecureContentStatus
-   * @param {boolean} schemeIsCryptographic
+   * @param {?string} summary
    */
-  constructor(securityState, explanations, insecureContentStatus, schemeIsCryptographic) {
+  constructor(securityState, schemeIsCryptographic, explanations, insecureContentStatus, summary) {
     this.securityState = securityState;
+    this.schemeIsCryptographic = schemeIsCryptographic;
     this.explanations = explanations;
     this.insecureContentStatus = insecureContentStatus;
-    this.schemeIsCryptographic = schemeIsCryptographic;
+    this.summary = summary;
   }
 };
 
 /**
  * @implements {Protocol.SecurityDispatcher}
  * @unrestricted
  */
 Security.SecurityDispatcher = class {
   constructor(model) {
     this._model = model;
   }
 
   /**
    * @override
    * @param {!Protocol.Security.SecurityState} securityState
+   * @param {boolean} schemeIsCryptographic
    * @param {!Array<!Protocol.Security.SecurityStateExplanation>=} explanations

[dgozman, 2016/12/15 18:54:43]

No need for = anymore. And for "|| []" below. Same goes for
insecureContentStatus.

    * @param {!Protocol.Security.InsecureContentStatus=} insecureContentStatus
-   * @param {boolean=} schemeIsCryptographic
+   * @param {?string=} summary
    */
-  securityStateChanged(securityState, explanations, insecureContentStatus, schemeIsCryptographic) {
+  securityStateChanged(securityState, schemeIsCryptographic, explanations, insecureContentStatus, summary) {
     var pageSecurityState = new Security.PageSecurityState(
-        securityState, explanations || [], insecureContentStatus || null, schemeIsCryptographic || false);
+        securityState, schemeIsCryptographic, explanations || [], insecureContentStatus || null, summary || null);
     this._model.dispatchEventToListeners(Security.SecurityModel.Events.SecurityStateChanged, pageSecurityState);
   }
 };