Examine source code of HiYo-Chat anonymously

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "HiYo-Chat anonymously",
  "description": "Chat anonymously with people on same website",
  "version": "1.0.1",
  "icons": {
    "128": "icon_128.png"
  },
  "content_security_policy": "script-src 'self' https://cdn.firebase.com https://*.firebaseio.com; object-src 'self'",
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "index.html"
  },
  "permissions": [
    "storage",
    "tabs"
  ]
}