Add certificate error handling to devtools.

third_party/WebKit/Source/core/inspector/browser_protocol.json

Index: third_party/WebKit/Source/core/inspector/browser_protocol.json
diff --git a/third_party/WebKit/Source/core/inspector/browser_protocol.json b/third_party/WebKit/Source/core/inspector/browser_protocol.json
index 662d9e183f19372f2f70c38e85cfea83f141c8e4..43ac795eb22e1e2fb0bd5d40aeb64abab4c8efb5 100644
--- a/third_party/WebKit/Source/core/inspector/browser_protocol.json
+++ b/third_party/WebKit/Source/core/inspector/browser_protocol.json
@@ -883,6 +883,12 @@
                     { "name": "displayedInsecureContentStyle", "$ref": "SecurityState", "description": "Security state representing a page that displayed insecure content." }
                 ],
                 "description": "Information about insecure content on the page."
+            },
+            {
+                "id": "CertificateErrorAction",
+                "type": "string",
+                "enum": ["continue", "cancel", "deny"],
+                "description": "The action to take when a certificate error occurs."

[Eric Seckler, 2017/01/19 11:42:28]

nit: add a short description about what each enum value means.

[irisu, 2017/02/07 23:30:19]

Done.

             }
         ],
         "commands": [
@@ -897,6 +903,14 @@
             {
                 "name": "showCertificateViewer",
                 "description": "Displays native dialog with the certificate details."
+            },
+            {
+                "name": "handleCertificateError",
+                "description": "Handles a certificate error.",
+                "parameters": [
+                    { "name": "eventID", "type": "integer", "description": "The ID of the event."},
+                    { "name": "action", "$ref": "CertificateErrorAction", "description": "The action to take on the certificate error." }
+                ]
             }
         ],
         "events": [
@@ -910,6 +924,13 @@
                     { "name": "insecureContentStatus", "$ref": "InsecureContentStatus", "description": "Information about insecure content on the page." },
                     { "name": "summary", "type": "string", "description": "Overrides user-visible description of the state.", "optional": true }
                 ]
+            },
+            {
+                "name": "certificateError",

[Eric Seckler, 2017/01/19 11:42:28]

The bot seems to complain that Security.SecurityDispatcher doesn't yet handle
this event. Looks like you'll have to add a stub implementation to the class in
third_party/WebKit/Source/devtools/front_end/security/SecurityModel.js

[irisu, 2017/02/07 23:30:20]

Done.

+                "description": "There is a certificate error.",
+                "parameters": [
+                    { "name": "eventID", "type": "integer", "description": "The ID of the event."}
+                ]
             }
         ]
     },