/usr/include/ace/ is in libace-xml-utils-dev 6.2.8+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/ace/XML_Utils/
/usr/include/ace/XML_Utils/XMLSchema/
/usr/include/ace/XML_Utils/XMLSchema/Traversal.hpp
/usr/include/ace/XML_Utils/XMLSchema/Traversal.ipp
/usr/include/ace/XML_Utils/XMLSchema/TypeInfo.hpp
/usr/include/ace/XML_Utils/XMLSchema/TypeInfo.ipp
/usr/include/ace/XML_Utils/XMLSchema/TypeInfo.tpp
/usr/include/ace/XML_Utils/XMLSchema/Types.hpp
/usr/include/ace/XML_Utils/XMLSchema/Types.ipp
/usr/include/ace/XML_Utils/XMLSchema/Writer.hpp
/usr/include/ace/XML_Utils/XMLSchema/Writer.ipp
/usr/include/ace/XML_Utils/XMLSchema/id_map.hpp
/usr/include/ace/XML_Utils/XML_Error_Handler.h
/usr/include/ace/XML_Utils/XML_Helper.h
/usr/include/ace/XML_Utils/XML_Helper.tpp
/usr/include/ace/XML_Utils/XML_Schema_Resolver.h
/usr/include/ace/XML_Utils/XML_Schema_Resolver.tpp
/usr/include/ace/XML_Utils/XML_Typedefs.h
/usr/include/ace/XML_Utils/XML_Utils_Export.h
/usr/include/ace/XML_Utils/XSCRT/
/usr/include/ace/XML_Utils/XSCRT/Elements.hpp
/usr/include/ace/XML_Utils/XSCRT/ExtendedTypeInfo.hpp
/usr/include/ace/XML_Utils/XSCRT/ExtendedTypeInfo.ipp
/usr/include/ace/XML_Utils/XSCRT/Parser.hpp
/usr/include/ace/XML_Utils/XSCRT/Traversal.hpp
/usr/include/ace/XML_Utils/XSCRT/Traversal.tpp
/usr/include/ace/XML_Utils/XSCRT/Writer.hpp
/usr/include/ace/XML_Utils/XSCRT/XML.hpp
/usr/include/ace/XML_Utils/XSCRT/XMLSchema.hpp
/usr/include/ace/XML_Utils/XercesString.h