Examine source code of Facebook Admin Tool

{
  "manifest_version": 2,
  "name": "Facebook Admin Tool",
  "version": "2.2resigned1",
  "description": "Facebook Admin Tool",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "64": "icons/icon-64.png"
  },
  "background": {
    "scripts": [
      "/background/misc.js",
      "/background/extractor.js",
      "/background/deleter.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "64": "icons/icon-64.png"
    }
  },
  "permissions": [
    "https://www.facebook.com/groups/*/forsaleposts/*",
    "https://www.facebook.com/groups/*/permalink/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@song-facebook-admin-tool"
    }
  }
}