With their latest Android sandbox, Chrome OS integrated Wayland faster than my desktop distro!
Hopefully that's a sign of dogfooding where Google programmers actually start to develop Chrome OS within Chrome OS without a need of a workstation pushing updates to a 'device' from desktop Linux, Windows 10 or macOS. Ars Technica's scathing review of Android on the Pixel C concluded that if programmers were forced to actually use the product they were writing as a daily driver, usability issues might get fixed.
Andromeda/Fuchsia/Bison, whatever they're calling it, might build on Gentoo and Wayland to also produce a killer desktop experience in a way that Ubuntu Convergence and MS Continuum seem still-born.
But no, their vision will probably extend only to a locked down device.