/usr/include/bellagio/ is in libomxil-bellagio-dev 0.9.3-3ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/bellagio/OMXComponentRMExt.h
/usr/include/bellagio/OMXCoreRMExt.h
/usr/include/bellagio/common.h
/usr/include/bellagio/component_loader.h
/usr/include/bellagio/extension_struct.h
/usr/include/bellagio/omx_base_audio_port.h
/usr/include/bellagio/omx_base_clock_port.h
/usr/include/bellagio/omx_base_component.h
/usr/include/bellagio/omx_base_filter.h
/usr/include/bellagio/omx_base_image_port.h
/usr/include/bellagio/omx_base_port.h
/usr/include/bellagio/omx_base_sink.h
/usr/include/bellagio/omx_base_source.h
/usr/include/bellagio/omx_base_video_port.h
/usr/include/bellagio/omx_classmagic.h
/usr/include/bellagio/omx_comp_debug_levels.h
/usr/include/bellagio/omx_reference_resource_manager.h
/usr/include/bellagio/omxcore.h
/usr/include/bellagio/queue.h
/usr/include/bellagio/st_static_component_loader.h
/usr/include/bellagio/tsemaphore.h
/usr/include/bellagio/user_debug_levels.h
/usr/include/bellagio/utils.h