
When running as a X11 CM we shouldn't use the GLX winsys when the driver doesn't support it, i.e. OpenGL ES drivers. https://bugzilla.gnome.org/show_bug.cgi?id=771636
When running as a X11 CM we shouldn't use the GLX winsys when the driver doesn't support it, i.e. OpenGL ES drivers. https://bugzilla.gnome.org/show_bug.cgi?id=771636