/usr/include/pcl-1.7/pcl/io/ is in libpcl-dev 1.7.2-14build1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/pcl-1.7/pcl/io/ascii_io.h
/usr/include/pcl-1.7/pcl/io/boost.h
/usr/include/pcl-1.7/pcl/io/debayer.h
/usr/include/pcl-1.7/pcl/io/dinast_grabber.h
/usr/include/pcl-1.7/pcl/io/eigen.h
/usr/include/pcl-1.7/pcl/io/file_grabber.h
/usr/include/pcl-1.7/pcl/io/file_io.h
/usr/include/pcl-1.7/pcl/io/grabber.h
/usr/include/pcl-1.7/pcl/io/hdl_grabber.h
/usr/include/pcl-1.7/pcl/io/ifs_io.h
/usr/include/pcl-1.7/pcl/io/image.h
/usr/include/pcl-1.7/pcl/io/image_depth.h
/usr/include/pcl-1.7/pcl/io/image_grabber.h
/usr/include/pcl-1.7/pcl/io/image_ir.h
/usr/include/pcl-1.7/pcl/io/image_metadata_wrapper.h
/usr/include/pcl-1.7/pcl/io/image_rgb24.h
/usr/include/pcl-1.7/pcl/io/image_yuv422.h
/usr/include/pcl-1.7/pcl/io/impl/
/usr/include/pcl-1.7/pcl/io/impl/entropy_range_coder.hpp
/usr/include/pcl-1.7/pcl/io/impl/lzf_image_io.hpp
/usr/include/pcl-1.7/pcl/io/impl/octree_pointcloud_compression.hpp
/usr/include/pcl-1.7/pcl/io/impl/organized_pointcloud_compression.hpp
/usr/include/pcl-1.7/pcl/io/impl/pcd_io.hpp
/usr/include/pcl-1.7/pcl/io/impl/point_cloud_image_extractors.hpp
/usr/include/pcl-1.7/pcl/io/impl/synchronized_queue.hpp
/usr/include/pcl-1.7/pcl/io/impl/vtk_lib_io.hpp
/usr/include/pcl-1.7/pcl/io/io.h
/usr/include/pcl-1.7/pcl/io/io_exception.h
/usr/include/pcl-1.7/pcl/io/lzf.h
/usr/include/pcl-1.7/pcl/io/lzf_image_io.h
/usr/include/pcl-1.7/pcl/io/obj_io.h
/usr/include/pcl-1.7/pcl/io/oni_grabber.h
/usr/include/pcl-1.7/pcl/io/openni_camera/
/usr/include/pcl-1.7/pcl/io/openni_camera/image.h
/usr/include/pcl-1.7/pcl/io/openni_camera/image_depth.h
/usr/include/pcl-1.7/pcl/io/openni_camera/image_ir.h
/usr/include/pcl-1.7/pcl/io/openni_camera/image_metadata_wrapper.h
/usr/include/pcl-1.7/pcl/io/openni_camera/image_rgb24.h
/usr/include/pcl-1.7/pcl/io/openni_camera/image_yuv422.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_depth_image.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_device.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_device_kinect.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_device_oni.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_device_primesense.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_device_xtion.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_driver.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_exception.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_image.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_image_bayer_grbg.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_image_rgb24.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_image_yuv_422.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_ir_image.h
/usr/include/pcl-1.7/pcl/io/openni_camera/openni_shift_to_depth_conversion.h
/usr/include/pcl-1.7/pcl/io/openni_grabber.h
/usr/include/pcl-1.7/pcl/io/pcd_grabber.h
/usr/include/pcl-1.7/pcl/io/pcd_io.h
/usr/include/pcl-1.7/pcl/io/ply/
/usr/include/pcl-1.7/pcl/io/ply/byte_order.h
/usr/include/pcl-1.7/pcl/io/ply/io_operators.h
/usr/include/pcl-1.7/pcl/io/ply/ply.h
/usr/include/pcl-1.7/pcl/io/ply/ply_parser.h
/usr/include/pcl-1.7/pcl/io/ply_io.h
/usr/include/pcl-1.7/pcl/io/png_io.h
/usr/include/pcl-1.7/pcl/io/point_cloud_image_extractors.h
/usr/include/pcl-1.7/pcl/io/robot_eye_grabber.h
/usr/include/pcl-1.7/pcl/io/tar.h
/usr/include/pcl-1.7/pcl/io/vtk_io.h
/usr/include/pcl-1.7/pcl/io/vtk_lib_io.h