Examine source code of Film|Boards Extension

{
  "manifest_version": 2,
  "name": "Forum Addon for IMDb",
  "description": "This addon restores the forums removed from IMDb and you can continue posting to them on filmboards.com",
  "version": "1.25",
  "permissions": [
    "https://www.filmboards.com/",
    "https://filmboards.com/"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "48": "48.png",
    "96": "96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://www.imdb.com/title/*",
        "https://www.imdb.com/title/*",
        "http://www.imdb.com/name/*",
        "https://www.imdb.com/name/*",
        "http://m.imdb.com/title/*",
        "https://m.imdb.com/title/*",
        "http://m.imdb.com/name/*",
        "https://m.imdb.com/name/*"
      ],
      "css": [
        "board.css"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{809b7c8c-6100-4b26-822f-02056c930c17}"
    }
  }
}