/usr/include/ is in libgvnc-1.0-dev 0.5.3-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/gvncpulse-1.0/
/usr/include/gvncpulse-1.0/gvncpulse.h
/usr/include/gvncpulse-1.0/vncaudiopulse.h
/usr/include/gvnc-1.0/
/usr/include/gvnc-1.0/vnccursor.h
/usr/include/gvnc-1.0/vncaudioformat.h
/usr/include/gvnc-1.0/vncconnection.h
/usr/include/gvnc-1.0/vncutil.h
/usr/include/gvnc-1.0/gvnc.h
/usr/include/gvnc-1.0/vncconnectionenums.h
/usr/include/gvnc-1.0/vnccolormap.h
/usr/include/gvnc-1.0/vncaudio.h
/usr/include/gvnc-1.0/vncpixelformat.h
/usr/include/gvnc-1.0/vncframebuffer.h
/usr/include/gvnc-1.0/vncbaseframebuffer.h
/usr/include/gvnc-1.0/vncbaseaudio.h
/usr/include/gvnc-1.0/vncaudiosample.h