Users of Firefox 55 will now be able to interact with online VR content thanks to WebVR support coming to the stable release. Mozilla has also introduced a new screenshot tool which simplifies the sharing process by providing one-click uploading and automatically copying the link to your clipboard.
https://www.notebookcheck.net/VR-support-and-a-new-screenshot-sharing-tool-come-to-Firefox-55.240470.0.html