It is currently not possible to enable use_glib and use_ozone at the same time. For example they have a different UI message pump (message pump glib vs message pump libevent).

This seems to be primarily needed for LinuxUI (libgtkui) and linux accessibility (libatk).

These issues needs to be fixed in order to replace the desktop linux build with one that has support for both wayland and x11 using ozone.

See also
https://cs.chromium.org/chromium/src/build/config/ui.gni?q=build/config/ui.gni&sq=package:chromium&dr&l=49-55
which currently blocks setting these options under ozone.