RoboErik a5b0232920 Make sessions aware of user id
This tags all sessions with the user id that they were created for. It
also adds API for creating and querying sessions for a specific user.

This does not wrap providers per user yet which will be done in a
separate CL.

Change-Id: Icdaf701b0614a95301657998602c45208d548c27
2014-05-08 14:24:14 -07:00
..
2014-05-08 14:24:14 -07:00