This file is indexed.

/etc/X11/Xsession.d/65compiz_profile-on-session is in compiz-gnome 1:0.9.12.2+16.04.20160415-0ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# This file is sourced by Xsession(5), not executed.
# Select unity profile if we are in the default session.
# The default profile is used otherwise.

if [ "x$DESKTOP_SESSION" = "xubuntu" ]; then
    COMPIZ_CONFIG_PROFILE="ubuntu"
    export COMPIZ_CONFIG_PROFILE
elif [ "x$DESKTOP_SESSION" = "xmate" -o "x$XDG_SESSION_DESKTOP" = "xmate" ]; then
    COMPIZ_CONFIG_PROFILE="mate"
    export COMPIZ_CONFIG_PROFILE
fi