/usr/include/mirserver/mir/input/ is in libmirserver-dev 0.1.8+14.04.20140411-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/mirserver/mir/input/android/
/usr/include/mirserver/mir/input/android/default_android_input_configuration.h
/usr/include/mirserver/mir/input/android/dispatcher_input_configuration.h
/usr/include/mirserver/mir/input/composite_event_filter.h
/usr/include/mirserver/mir/input/cursor_listener.h
/usr/include/mirserver/mir/input/event_filter.h
/usr/include/mirserver/mir/input/input_channel.h
/usr/include/mirserver/mir/input/input_channel_factory.h
/usr/include/mirserver/mir/input/input_configuration.h
/usr/include/mirserver/mir/input/input_manager.h
/usr/include/mirserver/mir/input/input_reception_mode.h
/usr/include/mirserver/mir/input/input_region.h
/usr/include/mirserver/mir/input/input_report.h
/usr/include/mirserver/mir/input/input_targets.h
/usr/include/mirserver/mir/input/surface.h
/usr/include/mirserver/mir/input/vt_filter.h