Examine source code of AutoComplete Forms Clean

{
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "version": "52.1",
  "manifest_version": 2,
  "content_scripts": [
    {
      "js": [
        "scripts/content_script.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_start"
    }
  ],
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "applications": {
    "gecko": {
      "id": "autocomplete-forms-clean@piro.sakura.ne.jp",
      "strict_min_version": "52.0"
    }
  }
}