Examine source code of Coinbase

{
  "manifest_version": 3,
  "name": "Coinbase Wallet",
  "description": "Coinbase Wallet extension is the safest and easiest way to use crypto apps in your browser.",
  "version": "357.123.0",
  "icons": {
    "16": "favicon.png",
    "128": "favicon.png"
  },
  "action": {
    "default_popup": "index.html"
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bb00e015-e241-4fa4-a381-7140c0e90204}"
    }
  }
}