In 2014 Mozilla started working on adding VR capabilities to the Web. Our VR team proposed a number of new Web APIs and made an experimental VR build of Firefox available that supports rendering VR content using the Web to Oculus Rift headsets.
Consumer VR products are still in a nascent state, but clearly there is great promise for this technology. We have enough confidence in the new APIs we have proposed that we are today taking the step of integrating them into our regular nightly Firefox builds. Head over to MozVR for all the details, and if you own an Oculus Rift headset or mobile VR-capable hardware we support, give it a spin!