Chrome Version: 62.0.3202.16 
OS: Android N
VrCore Ver: 1.7.161000338
Device: Pixel

Note with Chrome 61.0.3163.79 this works. And using the 62 version of Chrome with the current 1.8 version of VrCore works as well.

What steps will reproduce the problem?
(1) Ininstall the current prod VrCore version
(2) Install prev VrCore ver 1.7.161000338
(3) Run Chrome 62.0.3202.16 and go to https://webvr.info/samples/03-vr-presentation.html

What is the expected result? An Enter VR button appears on page.

What happens instead? a message saying WebVR supported but no VRDisplays found is shown.