/usr/ is in liboclgrind-dev 15.5-3build1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/include/
/usr/include/oclgrind/
/usr/include/oclgrind/WorkGroup.h
/usr/include/oclgrind/Program.h
/usr/include/oclgrind/half.h
/usr/include/oclgrind/Queue.h
/usr/include/oclgrind/Kernel.h
/usr/include/oclgrind/Plugin.h
/usr/include/oclgrind/KernelInvocation.h
/usr/include/oclgrind/Memory.h
/usr/include/oclgrind/config.h
/usr/include/oclgrind/common.h
/usr/include/oclgrind/Context.h
/usr/include/oclgrind/WorkItem.h
/usr/share/
/usr/share/doc/
/usr/share/doc/liboclgrind-dev/
/usr/share/doc/liboclgrind-dev/copyright
/usr/lib/x86_64-linux-gnu/liboclgrind.so
/usr/share/doc/liboclgrind-dev/changelog.Debian.gz