/usr/ is in libace-htbp-dev 6.3.3+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/lintian/
/usr/share/lintian/overrides/
/usr/share/lintian/overrides/libace-htbp-dev
/usr/share/doc/
/usr/share/doc/libace-htbp-dev/
/usr/share/doc/libace-htbp-dev/copyright
/usr/share/doc/libace-htbp-dev/README.gz
/usr/lib/
/usr/lib/pkgconfig/
/usr/lib/pkgconfig/ACE_HTBP.pc
/usr/include/
/usr/include/ace/
/usr/include/ace/HTBP/
/usr/include/ace/HTBP/HTBP_Macros.h
/usr/include/ace/HTBP/HTBP_Environment.h
/usr/include/ace/HTBP/HTBP_Addr.h
/usr/include/ace/HTBP/HTBP_Channel.h
/usr/include/ace/HTBP/HTBP_Export.h
/usr/include/ace/HTBP/HTBP_Outside_Squid_Filter.inl
/usr/include/ace/HTBP/HTBP_Inside_Squid_Filter.h
/usr/include/ace/HTBP/HTBP_Filter_Factory.h
/usr/include/ace/HTBP/HTBP_Filter.inl
/usr/include/ace/HTBP/HTBP_Notifier.h
/usr/include/ace/HTBP/HTBP_Stream.h
/usr/include/ace/HTBP/HTBP_Filter.h
/usr/include/ace/HTBP/HTBP_Outside_Squid_Filter.h
/usr/include/ace/HTBP/HTBP_Session.h
/usr/include/ace/HTBP/HTBP_Inside_Squid_Filter.inl
/usr/include/ace/HTBP/HTBP_Channel.inl
/usr/include/ace/HTBP/HTBP_Session.inl
/usr/include/ace/HTBP/HTBP_ID_Requestor.h
/usr/share/doc/libace-htbp-dev/changelog.Debian.gz
/usr/lib/libACE_HTBP.so