Examine source code of Serial Filler

{
  "manifest_version": 2,
  "name": "Serial Filler",
  "description": "Wygeneruj losowe numery by wypełnić formularze na stronach WWW jednym kliknięciem.",
  "version": "0.3.1resigned1",
  "background": {
    "scripts": [
      "generators.js",
      "menu-bindings.js",
      "event.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_title": "No fields to autofill."
  },
  "permissions": [
    "contextMenus",
    "tabs"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3144cbce-fb38-482d-bf05-71a9dee2b8b5}"
    }
  }
}