Add certificate error handling to devtools.

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 157f4182ef97b6a26d1dcace1d83091ea73be06a..222b93a5955f7cdc6e6c8e0aa8394441d418074b 100644
--- a/third_party/WebKit/Source/devtools/front_end/security/SecurityModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/security/SecurityModel.js
@@ -108,4 +108,11 @@ Security.SecurityDispatcher = class {
         securityState, schemeIsCryptographic, explanations, insecureContentStatus, summary || null);
     this._model.dispatchEventToListeners(Security.SecurityModel.Events.SecurityStateChanged, pageSecurityState);
   }
+
+
+  /**
+   * @override
+   * @param {number} eventID
+   */
+  certificateError(eventID) {}
 };