Examine source code of Google mapi

{
  "name": "Google Maps",
  "version": "3",
  "icons": {
    "24": "24.png",
    "128": "128.png"
  },
  "app": {
    "urls": [
      "http://maps.google.com/"
    ],
    "launch": {
      "web_url": "http://maps.google.com/"
    }
  },
  "permissions": [
    "geolocation"
  ],
  "manifest_version": 2
}