/usr/include/ is in libqt5waylandcompositor5-dev 5.7.1~20161021-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/x86_64-linux-gnu/
/usr/include/x86_64-linux-gnu/qt5/
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandBufferRef
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandClient
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandCompositor
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandCompositorExtension
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandCompositorExtensionTemplate
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandDestroyListener
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandDrag
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandInputDevice
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandInputMethodControl
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandKeyboard
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandKeymap
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandObject
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandOutput
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandPointer
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandQuickCompositor
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandQuickExtension
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandQuickItem
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandQuickOutput
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandQuickShellSurfaceItem
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandQuickSurface
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandResource
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandShellSurface
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandShellSurfaceTemplate
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandSurface
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandSurfaceGrabber
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandSurfaceRole
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandTextInput
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandTextInputManager
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandTouch
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandView
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandWindowManagerExtension
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandWlShell
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandWlShellSurface
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandXdgPopup
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandXdgShell
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QWaylandXdgSurface
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QtWaylandCompositor
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QtWaylandCompositorDepends
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/QtWaylandCompositorVersion
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qtwaylandcompositorversion.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandbufferref.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandclient.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandcompositor.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandcompositorextension.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylanddestroylistener.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylanddrag.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandexport.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandinput.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandinputmethodcontrol.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandkeyboard.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandoutput.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandpointer.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandquickcompositor.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandquickextension.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandquickitem.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandquickoutput.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandquickshellsurfaceitem.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandquicksurface.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandresource.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandshellsurface.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandsurface.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandsurfacegrabber.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandtextinput.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandtextinputmanager.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandtouch.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandview.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandwindowmanagerextension.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandwlshell.h
/usr/include/x86_64-linux-gnu/qt5/QtWaylandCompositor/qwaylandxdgshell.h