Examine source code of Liferay Alert Designer

{
  "manifest_version": 2,
  "name": "Liferay Alert Designer",
  "version": "1.3resigned1",
  "description": "Adds a new and fresh look to the really miss placed Alert.",
  "homepage_url": "https://liferay.com/",
  "icons": {
    "48": "icons/icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "css": [
        "liferay.css"
      ],
      "js": [
        "jquery.js",
        "liferay.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d0c9d49f-3c3f-4f05-a002-88ac92ef78a3}"
    }
  }
}