/usr/include/unity/ is in libunity-api-dev 7.80.6+14.04.20140402-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/unity/Exception.h
/usr/include/unity/SymbolExport.h
/usr/include/unity/UnityExceptions.h
/usr/include/unity/api/
/usr/include/unity/api/Version.h
/usr/include/unity/shell/
/usr/include/unity/shell/application/
/usr/include/unity/shell/application/ApplicationInfoInterface.h
/usr/include/unity/shell/application/ApplicationManagerInterface.h
/usr/include/unity/shell/launcher/
/usr/include/unity/shell/launcher/LauncherItemInterface.h
/usr/include/unity/shell/launcher/LauncherModelInterface.h
/usr/include/unity/shell/launcher/QuickListModelInterface.h
/usr/include/unity/shell/notifications/
/usr/include/unity/shell/notifications/Enums.h
/usr/include/unity/shell/notifications/ModelInterface.h
/usr/include/unity/shell/notifications/NotificationInterface.h
/usr/include/unity/shell/notifications/SourceInterface.h
/usr/include/unity/util/
/usr/include/unity/util/Daemon.h
/usr/include/unity/util/DefinesPtrs.h
/usr/include/unity/util/FileIO.h
/usr/include/unity/util/IniParser.h
/usr/include/unity/util/NonCopyable.h
/usr/include/unity/util/ResourcePtr.h