Show the correct resource type when XHR fails in the inspector.

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications."
@@ skipping 1234 matching lines @@
                     { "name": "timestamp", "$ref": "Timestamp", "description": "Timestamp." },
                     { "name": "encodedDataLength", "type": "number", "description": "Total number of bytes received for this request." }
                 ]
             },
             {
                 "name": "loadingFailed",
                 "description": "Fired when HTTP request has failed to load.",
                 "parameters": [
                     { "name": "requestId", "$ref": "RequestId", "description": "Request identifier." },
                     { "name": "timestamp", "$ref": "Timestamp", "description": "Timestamp." },
+                    { "name": "type", "$ref": "Page.ResourceType", "description": "Resource type." },
                     { "name": "errorText", "type": "string", "description": "User friendly error message." },
                     { "name": "canceled", "type": "boolean", "optional": true, "description": "True if loading was canceled." }
                 ]
             },
             {
                 "name": "webSocketWillSendHandshakeRequest",
                 "description": "Fired when WebSocket is about to initiate handshake.",
                 "parameters": [
                     { "name": "requestId", "$ref": "RequestId", "description": "Request identifier." },
                     { "name": "timestamp", "$ref": "Timestamp", "description": "Timestamp." },
@@ skipping 2872 matching lines @@
             {
                 "name": "dataAvailable",
                 "parameters": [
                     {"name": "value", "type": "array", "items": { "$ref": "PowerEvent" }, "description": "List of power events." }
                 ],
                 "handlers": ["browser", "frontend"]
             }
         ]
     }]
 }