Comment # 1 on bug 1200581 from Ivan Vorstanenko

Also, I tried to force set icon. But, without result - no icon was added.

> ivan@homepc:~> G_RESOURCE_OVERLAYS='/org/gnome/control-center/info=/home/ivan/square-hicolor.svg' gnome-control-center
> GLib-GIO-Message: 11:36:55.161: Adding GResources overlay '/org/gnome/control-center/info=/home/ivan/square-hicolor.svg'

Also, deleting ditribution-logos*, logo changes to "Exclamation point" in About
System.
I think, problem not in icons on system but in gnome-control-settings.