gnome-session-common software package provides GNOME Session Manager - common files, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gnome-session-common
gnome-session-common is installed in your system.
Make ensure the gnome-session-common package were installed using the commands given below,
$ sudo dpkg-query -l | grep gnome-session-common *
You will get with gnome-session-common package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | GNOME |
| Package | gnome-session-common |
| Version | 3.4.2.1-4 |
| Description | GNOME Session Manager - common files |
| Sub Section | GNOME |