/usr/include/android/hardware/ is in android-headers 4.2.2-2-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/android/hardware/audio.h
/usr/include/android/hardware/audio_effect.h
/usr/include/android/hardware/audio_policy.h
/usr/include/android/hardware/bluetooth.h
/usr/include/android/hardware/bt_av.h
/usr/include/android/hardware/bt_hf.h
/usr/include/android/hardware/bt_hh.h
/usr/include/android/hardware/bt_hl.h
/usr/include/android/hardware/bt_pan.h
/usr/include/android/hardware/bt_sock.h
/usr/include/android/hardware/camera.h
/usr/include/android/hardware/camera2.h
/usr/include/android/hardware/camera_common.h
/usr/include/android/hardware/fb.h
/usr/include/android/hardware/fmradio.h
/usr/include/android/hardware/gps.h
/usr/include/android/hardware/gralloc.h
/usr/include/android/hardware/hardware.h
/usr/include/android/hardware/hwcomposer.h
/usr/include/android/hardware/hwcomposer_defs.h
/usr/include/android/hardware/hwcomposer_v0.h
/usr/include/android/hardware/keymaster.h
/usr/include/android/hardware/lights.h
/usr/include/android/hardware/local_time_hal.h
/usr/include/android/hardware/nfc.h
/usr/include/android/hardware/power.h
/usr/include/android/hardware/qemu_pipe.h
/usr/include/android/hardware/qemud.h
/usr/include/android/hardware/sensors.h
/usr/include/android/hardware_legacy/audio_policy_conf.h