libmirprotobuf3-dbgsym 0.21.0+16.04.20160330-0ubuntu1 (i386 binary) in ubuntu yakkety

 Mir is a display server running on linux systems, with a focus on efficiency,
 robust operation and a well-defined driver model.
 .
 Contains the shared library containing the Google Protobuf definitions
 required for Mir clients and servers.