/usr/share/dbus-1/services/com.ubuntuone.Credentials.service is in ubuntuone-client 3.0.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | [D-BUS Service]
Name=com.ubuntuone.Credentials
Exec=/usr/lib/ubuntuone-client/ubuntuone-login
|