DevTools: show extension name in console context switcher

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications."
@@ skipping 783 matching lines @@
                 "type": "integer",
                 "description": "Id of an execution context."
             },
             {
                 "id": "ExecutionContextDescription",
                 "type": "object",
                 "description": "Description of an isolated world.",
                 "properties": [
                     { "name": "id", "$ref": "ExecutionContextId", "description": "Unique id of the execution context. It can be used to specify in which execution context script evaluation should be performed." },
                     { "name": "isPageContext", "type": "boolean", "description": "True if this is a context where inpspected web page scripts run. False if it is a content script isolated context.", "hidden": true },
+                    { "name": "origin", "type": "string", "description": "Execution context origin.", "hidden": true},
                     { "name": "name", "type": "string", "description": "Human readable name describing given context.", "hidden": true},
                     { "name": "frameId", "$ref": "Page.FrameId", "description": "Id of the owning frame." }
                 ]
             }
 
         ],
         "commands": [
             {
                 "name": "evaluate",
                 "parameters": [
@@ skipping 3514 matching lines @@
             {
                 "name": "dataAvailable",
                 "parameters": [
                     {"name": "value", "type": "array", "items": { "$ref": "PowerEvent" }, "description": "List of power events." }
                 ],
                 "handlers": ["browser", "frontend"]
             }
         ]
     }]
 }