The ebuild already installs an icon when the X useflag is set: use X && doicon -s 16 -c status "${T}"/status it would be very convenient if the ebuild also installed a desktop entry in the same manner, using make_desktop_entry.
This string is enough for desktop entry. make_desktop_entry ${PN} Dropbox dropboxstatus-logo "Network;FileTransfer"
Added to 3.6.8