Examine source code of coinbase wallet Tab

{
  "manifest_version": 2,
  "name": "coinbase wallet Tab",
  "author": "coinbase Tab",
  "version": "1.1.6",
  "description": "Replace new tab page with a crypto dashboard",
  "icons": {
    "16": "16.png",
    "48": "48.png",
    "128": "128.png"
  },
  "browser_action": {},
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "permissions": [
    "alarms",
    "storage"
  ],
  "background": {
    "page": "background.html",
    "persistent": false
  },
  "content_security_policy": "script-src 'self' https://www.gstatic.com/ https://*.firebaseio.com https://www.googleapis.com; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{0c0b2a29-8191-4fa8-b534-6611251d387b}"
    }
  }
}