Examine source code of saat netizen 拡張機能

{
  "description": "saat netizen Extension",
  "manifest_version": 2,
  "name": "saat netizen Extension",
  "version": "2.1",
  "homepage_url": "http://www.ahnlab.com/",
  "icons": {
    "32": "icons/icon_32.png",
    "64": "icons/icon_64.png",
    "128": "icons/icon_128.png"
  },
  "applications": {
    "gecko": {
      "id": "{B003EC20-512F-11E5-B71A-8A161E5D46B0}",
      "strict_min_version": "48.0"
    }
  },
  "permissions": [
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}