Examine source code of Autofill Input data

{
  "description": "Autofill input cells and passwords.",
  "manifest_version": 2,
  "name": "Autofill",
  "version": "2.1",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "permissions": [
    "<all_urls>",
    "tabs",
    "activeTab",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content_scripts/backend.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icons/icon-32.png",
    "theme_icons": [
      {
        "light": "icons/icon-32-light.png",
        "dark": "icons/icon-32.png",
        "size": 32
      }
    ],
    "default_title": "Autofill",
    "default_popup": "popup/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d2ea4828-b177-405d-83e0-4c5e72f5d8ca}",
      "strict_min_version": "57.0"
    }
  }
}