Update protocol.json to support explanations for securityStateChanged.

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications.",
@@ skipping 4992 matching lines @@
     {
         "domain": "Security",
         "description": "Security",
         "hidden": true,
         "types": [
             {
                 "id": "SecurityState",
                 "type": "string",
                 "enum": ["unknown", "http", "insecure", "warning", "secure"],
                 "description": "The security level of a page or resource."
+            },
+            {
+                "id": "SecurityStateExplanation",

[pfeldman, 2015/06/18 06:45:15]

StateExplanation

+                "type": "object",
+                "properties": [
+                    { "name": "securityState", "$ref": "SecurityState", "description": "Security state representing the severity of the factor being explained." },
+                    { "name": "summary", "type": "string", "description": "Short phrase describing the type of factor." },
+                    { "name": "description", "type": "string", "description": "Full text explanation of the factor." }
+                ],
+                "description": "An explanation of an factor contributing to the security state."
             }
         ],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables tracking security state changes.",
                 "handlers": ["browser"]
             },
             {
                 "name": "disable",
                 "description": "Disables tracking security state changes.",
                 "handlers": ["browser"]
             }
         ],
         "events": [
             {
                 "name": "securityStateChanged",
                 "description": "The security state of the page changed.",
                 "parameters": [
-                    { "name": "securityState", "$ref": "SecurityState", "description": "Security state." }
+                    { "name": "securityState", "$ref": "SecurityState", "description": "Security state." },
+                    { "name": "explanations", "type": "array", "items": { "$ref": "SecurityStateExplanation" }, "description": "List of explanations for the security state. If the overall security state is `insecure` or `warning`, at least one corresponding explanation should be included.", "optional": true }
                 ],
                 "handlers": ["browser"]
             }
         ]
     }]
 }