Add isDeleted flag to ServiceWorkerRegistration DevTool's protocol.

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications."
@@ skipping 4022 matching lines @@
         "domain": "ServiceWorker",
         "hidden": true,
         "types": [
             {
                 "id": "ServiceWorkerRegistration",
                 "type": "object",
                 "description": "ServiceWorker registration.",
                 "properties": [
                     { "name": "registrationId", "type": "string" },
                     { "name": "scopeURL", "type": "string" },
+                    { "name": "isDeleted", "type": "boolean", "optional": true },
                     { "name": "activeVersion", "optional": true, "$ref": "ServiceWorkerVersion" },
                     { "name": "waitingVersion", "optional": true, "$ref": "ServiceWorkerVersion" },
                     { "name": "installingVersion", "optional": true, "$ref": "ServiceWorkerVersion" }
                 ]
             },
             {
                 "id": "ServiceWorkerVersion",
                 "type": "object",
                 "description": "ServiceWorker version.",
                 "properties": [
@@ skipping 852 matching lines @@
                 ],
                 "returns": [
                     { "name": "accessibilityNode", "$ref": "AXNode", "description": "The <code>Accessibility.AXNode</code> for this DOM node, if it exists.", "optional": true }
                 ],
                 "description": "Fetches the accessibility node for this DOM node, if it exists.",
                 "hidden": true
             }
         ]
     }]
 }