/usr/include/qt5/Qt3DQuick/ is in qt3d5-dev 5.0~git20130731-0ubuntu5.
This file is owned by root:root, with mode 0o755.
..
/usr/include/qt5/Qt3DQuick/QQuickAnimation3D
/usr/include/qt5/Qt3DQuick/QQuickEffect
/usr/include/qt5/Qt3DQuick/QQuickItem3D
/usr/include/qt5/Qt3DQuick/QQuickMesh
/usr/include/qt5/Qt3DQuick/QQuickViewport
/usr/include/qt5/Qt3DQuick/Qt3DQuick
/usr/include/qt5/Qt3DQuick/Qt3DQuickDepends
/usr/include/qt5/Qt3DQuick/Qt3DQuickVersion
/usr/include/qt5/Qt3DQuick/capsulemesh.h
/usr/include/qt5/Qt3DQuick/cylindermesh.h
/usr/include/qt5/Qt3DQuick/line.h
/usr/include/qt5/Qt3DQuick/point.h
/usr/include/qt5/Qt3DQuick/qmlres.h
/usr/include/qt5/Qt3DQuick/qquickanimation3d.h
/usr/include/qt5/Qt3DQuick/qquickeffect.h
/usr/include/qt5/Qt3DQuick/qquickitem3d.h
/usr/include/qt5/Qt3DQuick/qquickmesh.h
/usr/include/qt5/Qt3DQuick/qquickviewport.h
/usr/include/qt5/Qt3DQuick/qt3dquickglobal.h
/usr/include/qt5/Qt3DQuick/qt3dquickversion.h
/usr/include/qt5/Qt3DQuick/spheremesh.h