/usr/include/omniEvents/ is in libomnievents-dev 1:2.6.2-2ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/omniEvents/COS_sysdep.h
/usr/include/omniEvents/Callback.h
/usr/include/omniEvents/ConsumerAdmin.h
/usr/include/omniEvents/CosEventChannelAdmin.hh
/usr/include/omniEvents/CosEventComm.hh
/usr/include/omniEvents/CosLifeCycle.hh
/usr/include/omniEvents/CosTypedEventChannelAdmin.hh
/usr/include/omniEvents/CosTypedEventComm.hh
/usr/include/omniEvents/EventChannel.h
/usr/include/omniEvents/EventChannelAdmin.hh
/usr/include/omniEvents/EventChannelFactory.h
/usr/include/omniEvents/EventQueue.h
/usr/include/omniEvents/FT.hh
/usr/include/omniEvents/Filter.h
/usr/include/omniEvents/Mapper.h
/usr/include/omniEvents/Orb.h
/usr/include/omniEvents/PersistNode.h
/usr/include/omniEvents/ProxyManager.h
/usr/include/omniEvents/ProxyPullConsumer.h
/usr/include/omniEvents/ProxyPullSupplier.h
/usr/include/omniEvents/ProxyPushConsumer.h
/usr/include/omniEvents/ProxyPushSupplier.h
/usr/include/omniEvents/Servant.h
/usr/include/omniEvents/SupplierAdmin.h
/usr/include/omniEvents/config.h
/usr/include/omniEvents/defaults.h
/usr/include/omniEvents/omniEvents.hh
/usr/include/omniEvents/omniEventsLog.h
/usr/include/omniEvents/scour.h
/usr/include/omniEvents/version.h