I'm able to work on WebVR with the nightly build of FireFox, but I wanted to test the 90fps feature with Chromium ( Version 56.0.2902.0 (64-bit) )
When I log on to the editor with Chromium, I keep getting a Disconnect, Reconnecting in... message which never ends ( today, and weeks ago, before I just downloaded and used FireFox nightly ).
When I publish a VR project ( using a different browser ), eg the default WebVR Vive orange room demo, and press Play on chromium ( rather than Editor, which times out - see above ), then it crashes after a few seconds.
This might be a known issue, and will hopefully get resolved soon. Note that other non-PlayCanvas WebVR content works with Chromium and the Vive.