Add ServiceWorker timing information on the popup panel in DevTools's Network tab (1/2)

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications."
@@ skipping 1096 matching lines @@
                 "properties": [
                     { "name": "requestTime", "type": "number", "description": "Timing's requestTime is a baseline in seconds, while the other numbers are ticks in milliseconds relatively to this requestTime." },
                     { "name": "proxyStart", "type": "number", "description": "Started resolving proxy." },
                     { "name": "proxyEnd", "type": "number", "description": "Finished resolving proxy." },
                     { "name": "dnsStart", "type": "number", "description": "Started DNS address resolve." },
                     { "name": "dnsEnd", "type": "number", "description": "Finished DNS address resolve." },
                     { "name": "connectStart", "type": "number", "description": "Started connecting to the remote host." },
                     { "name": "connectEnd", "type": "number", "description": "Connected to the remote host." },
                     { "name": "sslStart", "type": "number", "description": "Started SSL handshake." },
                     { "name": "sslEnd", "type": "number", "description": "Finished SSL handshake." },
+                    { "name": "serviceWorkerFetchStart", "type": "number", "description": "Started fetching via ServiceWorker.", "hidden": true },
+                    { "name": "serviceWorkerFetchReady", "type": "number", "description": "Prepared a ServiceWorker.", "hidden": true },
+                    { "name": "serviceWorkerFetchEnd", "type": "number", "description": "Finished fetching via ServiceWorker.", "hidden": true },
                     { "name": "sendStart", "type": "number", "description": "Started sending request." },
                     { "name": "sendEnd", "type": "number", "description": "Finished sending request." },
                     { "name": "receiveHeadersEnd", "type": "number", "description": "Finished receiving response headers." }
                 ]
             },
             {
                 "id": "Request",
                 "type": "object",
                 "description": "HTTP request data.",
                 "properties": [
@@ skipping 3283 matching lines @@
             {
                 "name": "dataAvailable",
                 "parameters": [
                     {"name": "value", "type": "array", "items": { "$ref": "PowerEvent" }, "description": "List of power events." }
                 ],
                 "handlers": ["browser", "frontend"]
             }
         ]
     }]
 }