Hi guys,
We decided to open our own adaptation of Simple HMD plugin to use as Cardboard while official support is not implemented by Epic/Google
https://github.com/NivalVR/
Hope it will be helpful for you 
Hi guys,
We decided to open our own adaptation of Simple HMD plugin to use as Cardboard while official support is not implemented by Epic/Google
https://github.com/NivalVR/
Hope it will be helpful for you