Have gnome-shell-extension-prefs recommend chrome-gnome-shell
- gnome-shell-extension-prefs recommends visiting extensions.gnome.org to install extensions but that requires chrome-gnome-shell to be installed
- GNOME Software 3.36 no longer offers installing GNOME Shell extensions
LP: #1866841
Gbp-Dch: Full
(cherry picked from commit 441f4d0a)