Investigate and neuter fingerprinting potential of Permissions API
The Permissions API is now enabled in Firefox 52. We should come up with a plan to neuter its fingerprinting potential and implement it for Tor Browser 7.0:
https://bugzilla.mozilla.org/show_bug.cgi?id=1221106
https://bugzilla.mozilla.org/show_bug.cgi?id=1233702 (removes the associated pref)
https://developer.mozilla.org/en-US/docs/Web/API/Permissions_API
https://w3c.github.io/permissions/
issue