/usr/include/src/gui/painting/ is in libqt4-private-dev 4:4.8.1-0ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/src/gui/painting/qbackingstore_p.h
/usr/include/src/gui/painting/qbezier_p.h
/usr/include/src/gui/painting/qblendfunctions_p.h
/usr/include/src/gui/painting/qblittable_p.h
/usr/include/src/gui/painting/qcolor_p.h
/usr/include/src/gui/painting/qcosmeticstroker_p.h
/usr/include/src/gui/painting/qcssutil_p.h
/usr/include/src/gui/painting/qcups_p.h
/usr/include/src/gui/painting/qdatabuffer_p.h
/usr/include/src/gui/painting/qdrawhelper_arm_simd_p.h
/usr/include/src/gui/painting/qdrawhelper_mmx_p.h
/usr/include/src/gui/painting/qdrawhelper_neon_p.h
/usr/include/src/gui/painting/qdrawhelper_p.h
/usr/include/src/gui/painting/qdrawhelper_sse_p.h
/usr/include/src/gui/painting/qdrawhelper_x86_p.h
/usr/include/src/gui/painting/qdrawingprimitive_sse2_p.h
/usr/include/src/gui/painting/qemulationpaintengine_p.h
/usr/include/src/gui/painting/qfixed_p.h
/usr/include/src/gui/painting/qgraphicssystem_mac_p.h
/usr/include/src/gui/painting/qgraphicssystem_p.h
/usr/include/src/gui/painting/qgraphicssystem_qws_p.h
/usr/include/src/gui/painting/qgraphicssystem_raster_p.h
/usr/include/src/gui/painting/qgraphicssystem_runtime_p.h
/usr/include/src/gui/painting/qgraphicssystemex_p.h
/usr/include/src/gui/painting/qgraphicssystemex_symbian_p.h
/usr/include/src/gui/painting/qgraphicssystemfactory_p.h
/usr/include/src/gui/painting/qgraphicssystemplugin_p.h
/usr/include/src/gui/painting/qgrayraster_p.h
/usr/include/src/gui/painting/qimagescale_p.h
/usr/include/src/gui/painting/qmath_p.h
/usr/include/src/gui/painting/qmemrotate_p.h
/usr/include/src/gui/painting/qoutlinemapper_p.h
/usr/include/src/gui/painting/qpaintbuffer_p.h
/usr/include/src/gui/painting/qpaintengine_alpha_p.h
/usr/include/src/gui/painting/qpaintengine_blitter_p.h
/usr/include/src/gui/painting/qpaintengine_mac_p.h
/usr/include/src/gui/painting/qpaintengine_p.h
/usr/include/src/gui/painting/qpaintengine_preview_p.h
/usr/include/src/gui/painting/qpaintengine_raster_p.h
/usr/include/src/gui/painting/qpaintengine_raster_symbian_p.h
/usr/include/src/gui/painting/qpaintengine_x11_p.h
/usr/include/src/gui/painting/qpaintengineex_p.h
/usr/include/src/gui/painting/qpainter_p.h
/usr/include/src/gui/painting/qpainterpath_p.h
/usr/include/src/gui/painting/qpathclipper_p.h
/usr/include/src/gui/painting/qpdf_p.h
/usr/include/src/gui/painting/qpen_p.h
/usr/include/src/gui/painting/qpolygonclipper_p.h
/usr/include/src/gui/painting/qprintengine_mac_p.h
/usr/include/src/gui/painting/qprintengine_pdf_p.h
/usr/include/src/gui/painting/qprintengine_ps_p.h
/usr/include/src/gui/painting/qprintengine_qws_p.h
/usr/include/src/gui/painting/qprintengine_win_p.h
/usr/include/src/gui/painting/qprinter_p.h
/usr/include/src/gui/painting/qprinterinfo_p.h
/usr/include/src/gui/painting/qprinterinfo_unix_p.h
/usr/include/src/gui/painting/qrasterdefs_p.h
/usr/include/src/gui/painting/qrasterizer_p.h
/usr/include/src/gui/painting/qstroker_p.h
/usr/include/src/gui/painting/qtessellator_p.h
/usr/include/src/gui/painting/qtextureglyphcache_p.h
/usr/include/src/gui/painting/qunifiedtoolbarsurface_mac_p.h
/usr/include/src/gui/painting/qvectorpath_p.h
/usr/include/src/gui/painting/qwindowsurface_mac_p.h
/usr/include/src/gui/painting/qwindowsurface_p.h
/usr/include/src/gui/painting/qwindowsurface_qws_p.h
/usr/include/src/gui/painting/qwindowsurface_raster_p.h
/usr/include/src/gui/painting/qwindowsurface_s60_p.h
/usr/include/src/gui/painting/qwindowsurface_x11_p.h