Examine source code of GitHub PR File Randomizer

{
  "manifest_version": 2,
  "name": "GitHub PR File Randomizer",
  "version": "1.1",
  "description": "Randomly sorts files on GitHub PR pages",
  "permissions": [
    "https://github.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*/pull/*/files"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c7dbb105-a0cf-476f-aac7-ab5dd17c0a0b}"
    }
  }
}