That's awesome, and holy cow I think this is the first time I've ever seen Chrome on Linux actually render WebGL. Did they finally enable it by default in recent updates?
I've been playing with WebGL demos on Ubuntu for years, first Chrome then Firefox. It isn't new. You might also be impressed to find out that Steam is on Linux now too.
I still have to enable it in chrome://flags as of the last official GNU/Linux release. It is enabled by default in Windows releases in my experience.