/usr/ is in libros-rosgraph-msgs-dev 1.11.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/rosgraph_msgs/
/usr/share/rosgraph_msgs/cmake/
/usr/share/rosgraph_msgs/cmake/rosgraph_msgsConfig.cmake
/usr/share/rosgraph_msgs/cmake/rosgraph_msgs-msg-paths.cmake
/usr/share/rosgraph_msgs/cmake/rosgraph_msgsConfig-version.cmake
/usr/share/rosgraph_msgs/cmake/rosgraph_msgs-msg-extras.cmake
/usr/share/rosgraph_msgs/msg/
/usr/share/rosgraph_msgs/msg/Log.msg
/usr/share/rosgraph_msgs/msg/TopicStatistics.msg
/usr/share/rosgraph_msgs/msg/Clock.msg
/usr/share/rosgraph_msgs/package.xml
/usr/share/doc/
/usr/share/doc/libros-rosgraph-msgs-dev/
/usr/share/doc/libros-rosgraph-msgs-dev/copyright
/usr/share/doc/libros-rosgraph-msgs-dev/changelog.Debian.gz
/usr/lib/
/usr/lib/pkgconfig/
/usr/lib/pkgconfig/rosgraph_msgs.pc
/usr/include/
/usr/include/rosgraph_msgs/
/usr/include/rosgraph_msgs/Log.h
/usr/include/rosgraph_msgs/TopicStatistics.h
/usr/include/rosgraph_msgs/Clock.h