Examine source code of Youtube-teatro

{
  "manifest_version": 2,
  "name": "Youtube",
  "version": "1.1resigned1",
  "description": "Remove relacionados",
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "youtube.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f1f7dee3-4e8a-4fbc-b064-ce024c0aee35}"
    }
  }
}