Support DevTools for off-main-thread-fetch

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

 {
     "version": { "major": "1", "minor": "2" },
     "domains": [{
         "domain": "Inspector",
         "experimental": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications."
@@ skipping 1564 matching lines @@
                     { "name": "newPriority", "$ref": "ResourcePriority", "description": "New priority" },
                     { "name": "timestamp", "$ref": "Timestamp", "description": "Timestamp." }
                 ],
                 "experimental": true
             },
             {
                 "name": "requestWillBeSent",
                 "description": "Fired when page is about to send HTTP request.",
                 "parameters": [
                     { "name": "requestId", "$ref": "RequestId", "description": "Request identifier." },
-                    { "name": "frameId", "$ref": "Page.FrameId", "description": "Frame identifier.", "experimental": true },
-                    { "name": "loaderId", "$ref": "LoaderId", "description": "Loader identifier." },
+                    { "name": "loaderId", "$ref": "LoaderId", "description": "Loader identifier. Empty string if the request is fetched form worker." },
                     { "name": "documentURL", "type": "string", "description": "URL of the document this request is loaded for." },
                     { "name": "request", "$ref": "Request", "description": "Request data." },
                     { "name": "timestamp", "$ref": "Timestamp", "description": "Timestamp." },
                     { "name": "wallTime", "$ref": "Timestamp", "experimental": true, "description": "UTC Timestamp." },
                     { "name": "initiator", "$ref": "Initiator", "description": "Request initiator." },
                     { "name": "redirectResponse", "optional": true, "$ref": "Response", "description": "Redirect response data." },
-                    { "name": "type", "$ref": "Page.ResourceType", "optional": true, "experimental": true, "description": "Type of this resource." }
+                    { "name": "type", "$ref": "Page.ResourceType", "optional": true, "experimental": true, "description": "Type of this resource." },
+                    { "name": "frameId", "optional": true, "$ref": "Page.FrameId", "description": "Frame identifier.", "experimental": true }
                 ]
             },
             {
                 "name": "requestServedFromCache",
                 "description": "Fired if request ended up loading from cache.",
                 "parameters": [
                     { "name": "requestId", "$ref": "RequestId", "description": "Request identifier." }
                 ]
             },
             {
                 "name": "responseReceived",
                 "description": "Fired when HTTP response is available.",
                 "parameters": [
                     { "name": "requestId", "$ref": "RequestId", "description": "Request identifier." },
-                    { "name": "frameId", "$ref": "Page.FrameId", "description": "Frame identifier.", "experimental": true },
-                    { "name": "loaderId", "$ref": "LoaderId", "description": "Loader identifier." },
+                    { "name": "loaderId", "$ref": "LoaderId", "description": "Loader identifier. Empty string if the request is fetched form worker." },
                     { "name": "timestamp", "$ref": "Timestamp", "description": "Timestamp." },
                     { "name": "type", "$ref": "Page.ResourceType", "description": "Resource type." },
-                    { "name": "response", "$ref": "Response", "description": "Response data." }
+                    { "name": "response", "$ref": "Response", "description": "Response data." },
+                    { "name": "frameId", "optional": true, "$ref": "Page.FrameId", "description": "Frame identifier.", "experimental": true }
                 ]
             },
             {
                 "name": "dataReceived",
                 "description": "Fired when data chunk was received over the network.",
                 "parameters": [
                     { "name": "requestId", "$ref": "RequestId", "description": "Request identifier." },
                     { "name": "timestamp", "$ref": "Timestamp", "description": "Timestamp." },
                     { "name": "dataLength", "type": "integer", "description": "Data chunk length." },
                     { "name": "encodedDataLength", "type": "integer", "description": "Actual bytes received (might be less than dataLength for compressed encodings)." }
@@ skipping 3214 matching lines @@
                 "parameters": [
                     { "name": "windowId", "$ref": "WindowID", "description": "Browser window id." }
                 ],
                 "returns": [
                     { "name": "bounds", "$ref": "Bounds", "description": "Bounds information of the window. When window state is 'minimized', the restored window position and size are returned." }
                 ]
             }
         ]
     }]
 }