Examine source code of LoctrackerAddon

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Loctracker Addon",
  "version": "1.1resigned1",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "tabs",
    "http://www.locator.lt/loctracker/pages/monitor.jsf"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{47b6cd15-e881-46f3-8ab6-a83fd847681a}"
    }
  }
}