Examine source code of skip youtube ads

{
  "manifest_version": 2,
  "name": "skip youtube ads",
  "version": "1.0",
  "description": "Simule le clique sur le bouton pour ignorer les publicités sur YouTube.",
  "icons": {
    "48": "icons/border-48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "nath.peix@gmail.com"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "code-javascript.js"
      ]
    }
  ]
}