Firefox ≥52 and extensions.gnome.org

[Olav Vitters <olav vitters nl>]

Hello,

To use extensions.gnome.org under Firefox ≥52 either use the GNOME
software support, or package chrome-gnome-shell. This as Firefox is
dropping its NPAPI support as of that version. An exception is made for
the ESR build, but recommend not to rely on it any longer.

For more details please see:
https://blogs.gnome.org/ne0sight/2016/12/25/how-to-install-gnome-shell-extensions-with-firefox-52/

Quote:
| You should not be confused by it’s name because chrome-gnome-shell
| supports all major browsers: Google Chrome/Chromium, Vivaldi, Opera and
| Firefox.


-- 
Regards,
Olav