/usr/share/seccomp/policygroups/ubuntu-core/16.04/desktop is in ubuntu-core-security-seccomp 16.04.15.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3
# Description: Can access non-hidden files in user's $HOME. This is restricted # because it gives file access to all of the user's $HOME. # Usage: reserved