/usr/include/ is in libgaminggear-dev 0.15.1-7.
This file is owned by root:root, with mode 0o755.
..
/usr/include/gaminggear-0/
/usr/include/gaminggear-0/gaminggear/
/usr/include/gaminggear-0/gaminggear/audio_notificator.h
/usr/include/gaminggear-0/gaminggear/gaminggear.h
/usr/include/gaminggear-0/gaminggear/gaminggear_device.h
/usr/include/gaminggear-0/gaminggear/gaminggear_fx_plugin.h
/usr/include/gaminggear-0/gaminggear/gaminggear_hid_combo_box.h
/usr/include/gaminggear-0/gaminggear/gaminggear_hscale.h
/usr/include/gaminggear-0/gaminggear/gaminggear_macro_dialog.h
/usr/include/gaminggear-0/gaminggear/gaminggear_macro_editor_dialog.h
/usr/include/gaminggear-0/gaminggear/gaminggear_profile_data.h
/usr/include/gaminggear-0/gaminggear/gaminggear_profile_page.h
/usr/include/gaminggear-0/gaminggear/gaminggear_profile_table.h
/usr/include/gaminggear-0/gaminggear/gaminggear_text_dialog.h
/usr/include/gaminggear-0/gaminggear/gaminggear_timeout_bar.h
/usr/include/gaminggear-0/gaminggear/gaminggear_timeout_dialog.h
/usr/include/gaminggear-0/gaminggear/gaminggear_xy_scales.h
/usr/include/gaminggear-0/gaminggear/gdk_key_translations.h
/usr/include/gaminggear-0/gaminggear/gfx.h
/usr/include/gaminggear-0/gaminggear/hid_uid.h
/usr/include/gaminggear-0/gaminggear/input_events.h
/usr/include/gaminggear-0/gaminggear/key_translations.h
/usr/include/gaminggear-0/gaminggear/macro.h
/usr/include/gaminggear-0/gaminggear/macro_threads.h
/usr/include/gaminggear-0/gaminggear/profiles.h
/usr/include/gaminggear-0/gaminggear/screen_notificator.h
/usr/include/gaminggear-0/gaminggear/threads.h