/usr/include/ is in libdbus-cpp-dev 2.0.0+14.04.20140326-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/core/
/usr/include/core/dbus/
/usr/include/core/dbus/compiler.h
/usr/include/core/dbus/fixture.h
/usr/include/core/dbus/match_rule.h
/usr/include/core/dbus/visibility.h
/usr/include/core/dbus/traits/
/usr/include/core/dbus/traits/service.h
/usr/include/core/dbus/traits/timeout.h
/usr/include/core/dbus/traits/watch.h
/usr/include/core/dbus/helper/
/usr/include/core/dbus/helper/is_compound_type.h
/usr/include/core/dbus/helper/type_mapper.h
/usr/include/core/dbus/helper/signature.h
/usr/include/core/dbus/helper/apply_visitor.h
/usr/include/core/dbus/message_factory.h
/usr/include/core/dbus/service.h
/usr/include/core/dbus/well_known_bus.h
/usr/include/core/dbus/resolver.h
/usr/include/core/dbus/property.h
/usr/include/core/dbus/result.h
/usr/include/core/dbus/announcer.h
/usr/include/core/dbus/service_watcher.h
/usr/include/core/dbus/signal.h
/usr/include/core/dbus/message.h
/usr/include/core/dbus/interfaces/
/usr/include/core/dbus/interfaces/properties.h
/usr/include/core/dbus/interfaces/object_manager.h
/usr/include/core/dbus/interfaces/introspectable.h
/usr/include/core/dbus/executor.h
/usr/include/core/dbus/asio/
/usr/include/core/dbus/asio/executor.h
/usr/include/core/dbus/error.h
/usr/include/core/dbus/types/
/usr/include/core/dbus/types/variant.h
/usr/include/core/dbus/types/any.h
/usr/include/core/dbus/types/unix_fd.h
/usr/include/core/dbus/types/object_path.h
/usr/include/core/dbus/types/struct.h
/usr/include/core/dbus/types/signature.h
/usr/include/core/dbus/types/stl/
/usr/include/core/dbus/types/stl/tuple.h
/usr/include/core/dbus/types/stl/list.h
/usr/include/core/dbus/types/stl/string.h
/usr/include/core/dbus/types/stl/map.h
/usr/include/core/dbus/types/stl/vector.h
/usr/include/core/dbus/stub.h
/usr/include/core/dbus/generator_configuration.h
/usr/include/core/dbus/impl/
/usr/include/core/dbus/impl/property.h
/usr/include/core/dbus/impl/signal.h
/usr/include/core/dbus/impl/message.h
/usr/include/core/dbus/impl/object.h
/usr/include/core/dbus/argument_type.h
/usr/include/core/dbus/object.h
/usr/include/core/dbus/generator.h
/usr/include/core/dbus/skeleton.h
/usr/include/core/dbus/message_streaming_operators.h
/usr/include/core/dbus/codec.h
/usr/include/core/dbus/bus.h
/usr/include/core/dbus/dbus.h
/usr/include/core/dbus/lifetime_constrained_cache.h
/usr/include/core/dbus/introspection_parser.h
/usr/include/core/dbus/message_router.h
/usr/include/core/dbus/pending_call.h