Examine source code of DevTab Studio

{
  "manifest_version": 2,
  "name": "DevTab",
  "version": "1.0",
  "description": "A customizable new tab page.",
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "devtab@potato-studios.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
}