Investigate WebVR API 1.1 for fingerprinting/linkability risks

Virtual Reality (VR) is coming to the browser. Mozilla intends to enable VR support some time between ESR52 and ESR 59 for Windows and Linux at least (see: https://bugzilla.mozilla.org/show_bug.cgi?id=1343368 and https://groups.google.com/forum/?_escaped_fragment_=topic/mozilla.dev.platform/TB2gVavDe6w#!topic/mozilla.dev.platform/TB2gVavDe6w)

The W3C draft is on: https://w3c.github.io/webvr/archive/prerelease/1.1/