Examine source code of Grid Layout System

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Grid Layout System",
  "short_name": "Grid Laypute",
  "description": "Grid Layout se destaca al dividir una página en regiones principales o definir la relación en términos de tamaño, posición y capa",
  "author": {
    "Nombre": "Carlos Guilarte",
    "email": "carlosguilarte3@gmail.com"
  },
  "version": "1.0.0",
  "manifest_version": 3,
  "action": {
    "default_title": "Grid Layout System",
    "default_popup": "index.html"
  },
  "icons": {
    "128": "icon_128.png"
  },
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "css": [
        "styles.css"
      ],
      "js": [
        "inject.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}