/usr/share/applications/grub-choose-default.desktop is in grub-choose-default 0.2-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | [Desktop Entry]
Name=Choose next default for grub
Comment=Control grub default through a GUI
Exec=su-to-root -c /usr/sbin/grub-choose-default
Terminal=false
Type=Application
Categories=System;
|