Examine source code of Mostrar Ocultar Inputs

{
  "manifest_version": 2,
  "name": "Mostrar/Ocultar Inputs",
  "version": "1.0.0",
  "description": "Revela inputs (incluyendo hidden) y muestra id/name; permite ocultarlos luego.",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_title": "Mostrar/Ocultar Inputs",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    },
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@mostrar-ocultar-inputs",
      "strict_min_version": "91.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}