chromium/chrome/test/data/devtools/webrtc_device_provider/devtools_bridge_instances_response.json

 {
   "devices": [ {
      "channel": {
         "gcmRegistrationId": "APA91bGrjSdLo-TlFYWxQhRlKLfeGP4lu7sKRfXs4dB7wXW4iuKWRzeIPwMxOWLZxFmyN3D1HgnWWrv0HgixRONIr_...",
         "supportedType": "gcm"
      },
      "commandDefs": {
         "base": {
            "_iceExchange": {
               "kind": "clouddevices#commandDef",
               "parameters": {
                  "_clientCandidates": {
                     "type": "string"
                  },
                  "_sessionId": {
                     "type": "string"
                  }
               }
            },
            "_renegotiate": {
               "kind": "clouddevices#commandDef",
               "parameters": {
                  "_offer": {
                     "type": "string"
                  },
                  "_sessionId": {
                     "type": "string"
                  }
               }
            },
            "_startSession": {
               "kind": "clouddevices#commandDef",
               "parameters": {
                  "_config": {
                     "type": "string"
                  },
                  "_offer": {
                     "type": "string"
                  },
                  "_sessionId": {
                     "type": "string"
                  }
               }
            }
         }
      },
      "connectionStatus": "unknown",
      "creationTimeMs": "1418304526412",
      "deviceKind": "vendor",
      "displayName": "Chrome",
      "id": "ab911465-83c7-e335-ea64-cb656868cbe0",
      "kind": "clouddevices#device",
      "lastUseTimeMs": "1418304532173",
      "name": "Chrome DevTools Bridge",
      "owner": "[email protected]",
      "personalizedInfo": {
         "maxRole": "owner"
      },
      "systemName": "Chrome DevTools Bridge"
   } ],
   "kind": "clouddevices#devicesListResponse"
}