Has anyone used amazon_cognito_identity_dart_2 with the Federated Google login for Flutter Web?

E.g. Use case 19. Using this library with Cognito's federated sign in on mobile devices. Use flutter_webview (https://pub.dev/packages/webview_flutter) to navigate to Cognito's authorize URL.

However webview_flutter is mobile only so that won't work. How to do this with Flutter Web?