/usr/include/ is in libkpimkdav-dev 17.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KPim/
/usr/include/KPim/KDAV/
/usr/include/KPim/KDAV/DavCollection
/usr/include/KPim/KDAV/DavCollectionDeleteJob
/usr/include/KPim/KDAV/DavCollectionModifyJob
/usr/include/KPim/KDAV/DavCollectionsFetchJob
/usr/include/KPim/KDAV/DavCollectionsMultiFetchJob
/usr/include/KPim/KDAV/DavError
/usr/include/KPim/KDAV/DavItem
/usr/include/KPim/KDAV/DavItemCreateJob
/usr/include/KPim/KDAV/DavItemDeleteJob
/usr/include/KPim/KDAV/DavItemFetchJob
/usr/include/KPim/KDAV/DavItemModifyJob
/usr/include/KPim/KDAV/DavItemsFetchJob
/usr/include/KPim/KDAV/DavItemsListJob
/usr/include/KPim/KDAV/DavJobBase
/usr/include/KPim/KDAV/DavManager
/usr/include/KPim/KDAV/DavPrincipalHomesetsFetchJob
/usr/include/KPim/KDAV/DavPrincipalSearchJob
/usr/include/KPim/KDAV/DavProtocolBase
/usr/include/KPim/KDAV/DavUrl
/usr/include/KPim/KDAV/Enums
/usr/include/KPim/KDAV/EtagCache
/usr/include/KPim/KDAV/Utils
/usr/include/KPim/kdav/
/usr/include/KPim/kdav/davcollection.h
/usr/include/KPim/kdav/davcollectiondeletejob.h
/usr/include/KPim/kdav/davcollectionmodifyjob.h
/usr/include/KPim/kdav/davcollectionsfetchjob.h
/usr/include/KPim/kdav/davcollectionsmultifetchjob.h
/usr/include/KPim/kdav/daverror.h
/usr/include/KPim/kdav/davitem.h
/usr/include/KPim/kdav/davitemcreatejob.h
/usr/include/KPim/kdav/davitemdeletejob.h
/usr/include/KPim/kdav/davitemfetchjob.h
/usr/include/KPim/kdav/davitemmodifyjob.h
/usr/include/KPim/kdav/davitemsfetchjob.h
/usr/include/KPim/kdav/davitemslistjob.h
/usr/include/KPim/kdav/davjobbase.h
/usr/include/KPim/kdav/davmanager.h
/usr/include/KPim/kdav/davprincipalhomesetsfetchjob.h
/usr/include/KPim/kdav/davprincipalsearchjob.h
/usr/include/KPim/kdav/davprotocolbase.h
/usr/include/KPim/kdav/davurl.h
/usr/include/KPim/kdav/enums.h
/usr/include/KPim/kdav/etagcache.h
/usr/include/KPim/kdav/kpimkdav_export.h
/usr/include/KPim/kdav/libkdav_debug.h
/usr/include/KPim/kdav/utils.h
/usr/include/KPim/kpimkdav_version.h