Examine source code of FlashBack Tab Restore

{
  "version": "20.21",
  "manifest_version": 2,
  "short_name": "defender",
  "name": "Fingerprint Bypass",
  "permissions": [
    "storage"
  ],
  "description": "Fingerprint Bypass",
  "content_scripts": [
    {
      "all_frames": true,
      "matches": [
        "*://*/*"
      ],
      "match_about_blank": true,
      "run_at": "document_start",
      "js": [
        "index.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f0af1292-6347-4f8e-9d74-ebc6ee7280c7}"
    }
  }
}