/usr/include/ is in libqt5svg5-private-dev 5.2.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/qt5/
/usr/include/qt5/QtSvg/
/usr/include/qt5/QtSvg/5.2.1/
/usr/include/qt5/QtSvg/5.2.1/QtSvg/
/usr/include/qt5/QtSvg/5.2.1/QtSvg/private/
/usr/include/qt5/QtSvg/5.2.1/QtSvg/private/qsvgstructure_p.h
/usr/include/qt5/QtSvg/5.2.1/QtSvg/private/qsvgfunctions_wince_p.h
/usr/include/qt5/QtSvg/5.2.1/QtSvg/private/qsvgfont_p.h
/usr/include/qt5/QtSvg/5.2.1/QtSvg/private/qsvgnode_p.h
/usr/include/qt5/QtSvg/5.2.1/QtSvg/private/qsvgstyle_p.h
/usr/include/qt5/QtSvg/5.2.1/QtSvg/private/qsvggraphics_p.h
/usr/include/qt5/QtSvg/5.2.1/QtSvg/private/qsvgtinydocument_p.h
/usr/include/qt5/QtSvg/5.2.1/QtSvg/private/qsvghandler_p.h