Examine source code of Universal Cookie Reader

{
  "manifest_version": 3,
  "name": "Universal Cookie Reader",
  "version": "1.1.1",
  "description": "Копирует 5 нужных кук для RiotGames, иначе открывает сайт",
  "browser_specific_settings": {
    "gecko": {
      "id": "stepan110604@mail.ru",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "64": "icons/64.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "cookies",
    "tabs"
  ],
  "host_permissions": [
    "https://auth.riotgames.com/*"
  ],
  "action": {
    "default_icon": {
      "16": "icons/16.png",
      "32": "icons/32.png",
      "48": "icons/48.png",
      "64": "icons/64.png"
    },
    "default_title": "Cookies",
    "default_popup": "popup.html"
  }
}