[2/5 blink] Shows the clients which are controlled by ServiceWorker in DevTools.

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications.",
@@ skipping 4095 matching lines @@
                 "id": "ServiceWorkerVersionRunningStatus",
                 "type": "string",
                 "enum": ["stopped", "starting", "running", "stopping"]
             },
             {
                 "id": "ServiceWorkerVersionStatus",
                 "type": "string",
                 "enum": ["new", "installing", "installed", "activating", "activated", "redundant"]
             },
             {
+                "id": "TargetID",
+                "type": "string"
+            },
+            {
                 "id": "ServiceWorkerVersion",
                 "type": "object",
                 "description": "ServiceWorker version.",
                 "properties": [
                     { "name": "versionId", "type": "string" },
                     { "name": "registrationId", "type": "string" },
                     { "name": "scriptURL", "type": "string" },
                     { "name": "runningStatus", "$ref": "ServiceWorkerVersionRunningStatus" },
                     { "name": "status", "$ref": "ServiceWorkerVersionStatus" },
                     { "name": "scriptLastModified", "type": "number", "optional": true, "description": "The Last-Modified header value of the main script." },
-                    { "name": "scriptResponseTime", "type": "number", "optional": true, "description": "The time at which the response headers of the main script were received from the server.  For cached script it is the last time the cache entry was validated." }
+                    { "name": "scriptResponseTime", "type": "number", "optional": true, "description": "The time at which the response headers of the main script were received from the server.  For cached script it is the last time the cache entry was validated." },
+                    { "name": "controlledClients", "type": "array", "optional": true, "items": { "$ref": "TargetID" } }
                 ]
             },
             {
                 "id": "ServiceWorkerErrorMessage",
                 "type": "object",
                 "description": "ServiceWorker error message.",
                 "properties": [
                     { "name": "errorMessage", "type": "string" },
                     { "name": "registrationId", "type": "string" },
                     { "name": "versionId", "type": "string" },
                     { "name": "sourceURL", "type": "string" },
                     { "name": "lineNumber", "type": "integer" },
                     { "name": "columnNumber", "type": "integer" }
                 ]
+            },
+            {
+                "id": "TargetInfo",
+                "type": "object",
+                "properties": [
+                    { "name": "id", "$ref": "TargetID" },
+                    { "name": "type", "type": "string" },
+                    { "name": "title", "type": "string" },
+                    { "name": "url", "type": "string" }
+                ]
             }
         ],
         "commands": [
             {
                 "name": "enable",
                 "handlers": ["browser"]
             },
             {
                 "name": "disable",
                 "handlers": ["browser"]
@@ skipping 63 matching lines @@
                 "handlers": ["browser"]
             },
             {
                 "name": "deliverPushMessage",
                 "parameters": [
                     { "name": "origin", "type": "string" },
                     { "name": "registrationId", "type": "string" },
                     { "name": "data", "type": "string" }
                 ],
                 "handlers": ["browser"]
+            },
+            {
+                "name": "getTargetInfo",
+                "async": true,
+                "parameters": [
+                    { "name": "targetId", "$ref": "TargetID" }
+                ],
+                "returns": [
+                    { "name": "targetInfo","$ref": "TargetInfo" }
+                ],
+                "handlers": ["browser"]
+            },
+            {
+                "name": "activateTarget",
+                "parameters": [
+                    { "name": "targetId", "$ref": "TargetID" }
+                ],
+                "handlers": ["browser"]
             }
         ],
         "events": [
             {
                 "name": "workerCreated",
                 "parameters": [
                     { "name": "workerId", "type": "string" },
                     { "name": "url", "type": "string" }
                 ],
                 "handlers": ["browser"]
@@ skipping 716 matching lines @@
                 ],
                 "returns": [
                     { "name": "accessibilityNode", "$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
             }
         ]
     }]
 }