Any ideas?
I quite like what they’ve done here…
Looks fully Material to me.
Looks also full of javascript. I would bet on Dart
Google is moving forward with Dart now, Angular Dart on the web and Flutter on the mobile side. It’s used for the high-profile apps, namely ad-related. The power is in the material components that let you build your apps quickly. Obviously, Google has a lot more code internally than what they’ve released to public.