Here is your answer. see screenshot

obviously, i have already read this and i use Chrome . I posted a suggestion on the Oculus ideas forum.

My question is about a Firefox solution .... on the Firefox forum....

Hi

We did have a solution for this in Firefox Reality, our browser for VR devices where you could send a tab from Firefox on your desktop or mobile devices to your VR headset.

Unfortunately Firefox Reality is no longer supported and we hope to withdraw it from VR app stores very soon.