Examine source code of avoid youtube shorts UI

{
  "manifest_version": 2,
  "name": "URL Modifier",
  "version": "1.3",
  "description": "Lê o URL, altera uma palavra e redireciona.",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "url-modifier-addon@seunomedodesenvolvedor.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "URL Modifier (Desativado)"
  }
}