We already had the machanism to show/hide the button based on the number
of camera devices detected. We were just not checking for that at
startup.
Fixes#1087
This patch provides an easy way to override default faces using
org.gnome.desktop.interface.avatar-directories settings configuration
that can be used in gnome-initial-setup too so downstream can override
default avatar faces without the need of a patch.
Fix https://gitlab.gnome.org/GNOME/gnome-control-center/issues/678
The `round_image()` function has the `icon_size` parameter, which is not
used by that function, because the size is determined from a pixbuf size.
Let's remove that redundant `icon_size` parameter.
Default set of avatars uses 512x512 currently. However, custom avatars
from file, or webcam are always scaled down to 96x96. Let's increase this
also to 512x512. This change should be safe, because theoretical maximal
file size is 1 MB, which is equal to accountsservice limit.
https://bugzilla.gnome.org/show_bug.cgi?id=792243
