/usr/include/KF5/ is in libkf5grantleetheme-dev 17.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/GrantleeTheme/
/usr/include/KF5/GrantleeTheme/GrantleeKi18nLocalizer
/usr/include/KF5/GrantleeTheme/GrantleeTheme
/usr/include/KF5/GrantleeTheme/GrantleeThemeEngine
/usr/include/KF5/GrantleeTheme/GrantleeThemeManager
/usr/include/KF5/GrantleeTheme/QtResourceTemplateLoader
/usr/include/KF5/grantleetheme/
/usr/include/KF5/grantleetheme/GrantleeKi18nLocalizer
/usr/include/KF5/grantleetheme/GrantleeTheme
/usr/include/KF5/grantleetheme/GrantleeThemeEngine
/usr/include/KF5/grantleetheme/GrantleeThemeManager
/usr/include/KF5/grantleetheme/QtResourceTemplateLoader
/usr/include/KF5/grantleetheme/grantleeki18nlocalizer.h
/usr/include/KF5/grantleetheme/grantleetheme.h
/usr/include/KF5/grantleetheme/grantleetheme_export.h
/usr/include/KF5/grantleetheme/grantleethemeengine.h
/usr/include/KF5/grantleetheme/grantleethememanager.h
/usr/include/KF5/grantleetheme/qtresourcetemplateloader.h
/usr/include/KF5/grantleetheme_version.h