Examine source code of Full Speed Ad

{
  "manifest_version": 2,
  "name": "Full Speed Ad",
  "version": "1.0",
  "description": "Detecta automaticamente quando um anúncio estiver na tela, e acelera o vídeo ao máximo.",
  "permissions": [],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "./scripts/speed-ad-mozilla.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1f4c6ed5-d533-4d91-aba1-a6f155a2c115}"
    }
  }
}