/usr/share/ is in libmap-msgs-dev 1.13.0-1.
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..
/usr/share/map_msgs/
/usr/share/map_msgs/cmake/
/usr/share/map_msgs/cmake/map_msgsConfig-version.cmake
/usr/share/map_msgs/cmake/map_msgsConfig.cmake
/usr/share/map_msgs/cmake/map_msgs-msg-paths.cmake
/usr/share/map_msgs/cmake/map_msgs-msg-extras.cmake
/usr/share/map_msgs/srv/
/usr/share/map_msgs/srv/GetPointMap.srv
/usr/share/map_msgs/srv/ProjectedMapsInfo.srv
/usr/share/map_msgs/srv/GetMapROI.srv
/usr/share/map_msgs/srv/SaveMap.srv
/usr/share/map_msgs/srv/GetPointMapROI.srv
/usr/share/map_msgs/srv/SetMapProjections.srv
/usr/share/map_msgs/msg/
/usr/share/map_msgs/msg/ProjectedMapInfo.msg
/usr/share/map_msgs/msg/ProjectedMap.msg
/usr/share/map_msgs/msg/PointCloud2Update.msg
/usr/share/map_msgs/msg/OccupancyGridUpdate.msg
/usr/share/map_msgs/package.xml
/usr/share/doc/
/usr/share/doc/libmap-msgs-dev/
/usr/share/doc/libmap-msgs-dev/copyright
/usr/share/doc/libmap-msgs-dev/changelog.Debian.gz