Google stopped supporting the original VR SDK for Android a while ago:

https://developers.google.com/vr

but the last released VR aar files were still online until recently. They are now gone, so sketches that use VR would not build because they cannot resolve the VR dependencies.

Google now offers an Cardboard SDK for Android NDK:

https://developers.google.com/cardboard/develop/c/quickstart

so a potential replacement will not be easy.