/etc/xdg/autostart/indicator-application.desktop is in indicator-application 12.10.1+15.04.20150128-0ubuntu1.
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 8 | [Desktop Entry]
Type=Application
Name=Indicator Application
Exec=/usr/lib/x86_64-linux-gnu/indicator-application/indicator-application-service
StartupNotify=false
Terminal=false
OnlyShowIn=Unity;GNOME;
AutostartCondition=GNOME3 unless-session gnome
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