/usr/include/libreoffice/cppuhelper/ is in libreoffice-dev 1:3.5.2-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libreoffice/cppuhelper/access_control.hxx
/usr/include/libreoffice/cppuhelper/basemutex.hxx
/usr/include/libreoffice/cppuhelper/bootstrap.hxx
/usr/include/libreoffice/cppuhelper/compbase.hxx
/usr/include/libreoffice/cppuhelper/compbase1.hxx
/usr/include/libreoffice/cppuhelper/compbase10.hxx
/usr/include/libreoffice/cppuhelper/compbase11.hxx
/usr/include/libreoffice/cppuhelper/compbase12.hxx
/usr/include/libreoffice/cppuhelper/compbase2.hxx
/usr/include/libreoffice/cppuhelper/compbase3.hxx
/usr/include/libreoffice/cppuhelper/compbase4.hxx
/usr/include/libreoffice/cppuhelper/compbase5.hxx
/usr/include/libreoffice/cppuhelper/compbase6.hxx
/usr/include/libreoffice/cppuhelper/compbase7.hxx
/usr/include/libreoffice/cppuhelper/compbase8.hxx
/usr/include/libreoffice/cppuhelper/compbase9.hxx
/usr/include/libreoffice/cppuhelper/compbase_ex.hxx
/usr/include/libreoffice/cppuhelper/component.hxx
/usr/include/libreoffice/cppuhelper/component_context.hxx
/usr/include/libreoffice/cppuhelper/exc_hlp.hxx
/usr/include/libreoffice/cppuhelper/factory.hxx
/usr/include/libreoffice/cppuhelper/findsofficepath.h
/usr/include/libreoffice/cppuhelper/implbase.hxx
/usr/include/libreoffice/cppuhelper/implbase1.hxx
/usr/include/libreoffice/cppuhelper/implbase10.hxx
/usr/include/libreoffice/cppuhelper/implbase11.hxx
/usr/include/libreoffice/cppuhelper/implbase12.hxx
/usr/include/libreoffice/cppuhelper/implbase2.hxx
/usr/include/libreoffice/cppuhelper/implbase3.hxx
/usr/include/libreoffice/cppuhelper/implbase4.hxx
/usr/include/libreoffice/cppuhelper/implbase5.hxx
/usr/include/libreoffice/cppuhelper/implbase6.hxx
/usr/include/libreoffice/cppuhelper/implbase7.hxx
/usr/include/libreoffice/cppuhelper/implbase8.hxx
/usr/include/libreoffice/cppuhelper/implbase9.hxx
/usr/include/libreoffice/cppuhelper/implbase_ex.hxx
/usr/include/libreoffice/cppuhelper/implbase_ex_post.hxx
/usr/include/libreoffice/cppuhelper/implbase_ex_pre.hxx
/usr/include/libreoffice/cppuhelper/implementationentry.hxx
/usr/include/libreoffice/cppuhelper/interfacecontainer.h
/usr/include/libreoffice/cppuhelper/interfacecontainer.hxx
/usr/include/libreoffice/cppuhelper/propertysetmixin.hxx
/usr/include/libreoffice/cppuhelper/propshlp.hxx
/usr/include/libreoffice/cppuhelper/proptypehlp.h
/usr/include/libreoffice/cppuhelper/proptypehlp.hxx
/usr/include/libreoffice/cppuhelper/queryinterface.hxx
/usr/include/libreoffice/cppuhelper/servicefactory.hxx
/usr/include/libreoffice/cppuhelper/shlib.hxx
/usr/include/libreoffice/cppuhelper/stdidlclass.hxx
/usr/include/libreoffice/cppuhelper/typeprovider.hxx
/usr/include/libreoffice/cppuhelper/unourl.hxx
/usr/include/libreoffice/cppuhelper/weak.hxx
/usr/include/libreoffice/cppuhelper/weakagg.hxx
/usr/include/libreoffice/cppuhelper/weakref.hxx