Examine source code of Robots.txt Rule Simulator

{
  "manifest_version": 2,
  "name": "Robots.txt Rule Simulator",
  "version": "1.0",
  "description": "Robots.txt Rule Simulator tool for efficient performance.",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Robots.txt Rule Simulator",
    "default_popup": "popup.html"
  },
  "icons": {
    "128": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "lngsongtrcsong160668@hotmail.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab"
  ]
}