/usr/include/KDE/KPIMTextEdit/ is in kdepimlibs5-dev 4:4.14.10-1ubuntu7.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KDE/KPIMTextEdit/EMailQuoteHighlighter
/usr/include/KDE/KPIMTextEdit/EmoticonTextEditAction
/usr/include/KDE/KPIMTextEdit/HtmlHighlighter
/usr/include/KDE/KPIMTextEdit/InsertHtmlDialog
/usr/include/KDE/KPIMTextEdit/InsertImageDialog
/usr/include/KDE/KPIMTextEdit/InsertImageWidget
/usr/include/KDE/KPIMTextEdit/InsertTableDialog
/usr/include/KDE/KPIMTextEdit/InsertTableWidget
/usr/include/KDE/KPIMTextEdit/SelectSpecialChar
/usr/include/KDE/KPIMTextEdit/TableCellFormatDialog
/usr/include/KDE/KPIMTextEdit/TableFormatDialog
/usr/include/KDE/KPIMTextEdit/TextEdit