/usr/share/perl5/HTTP/Headers/ is in libhttp-headers-actionpack-perl 0.09-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/HTTP/Headers/ActionPack/
/usr/share/perl5/HTTP/Headers/ActionPack.pm
/usr/share/perl5/HTTP/Headers/ActionPack/AcceptCharset.pm
/usr/share/perl5/HTTP/Headers/ActionPack/AcceptLanguage.pm
/usr/share/perl5/HTTP/Headers/ActionPack/AuthenticationInfo.pm
/usr/share/perl5/HTTP/Headers/ActionPack/Authorization/
/usr/share/perl5/HTTP/Headers/ActionPack/Authorization.pm
/usr/share/perl5/HTTP/Headers/ActionPack/Authorization/Basic.pm
/usr/share/perl5/HTTP/Headers/ActionPack/Authorization/Digest.pm
/usr/share/perl5/HTTP/Headers/ActionPack/ContentNegotiation.pm
/usr/share/perl5/HTTP/Headers/ActionPack/Core/
/usr/share/perl5/HTTP/Headers/ActionPack/Core/Base.pm
/usr/share/perl5/HTTP/Headers/ActionPack/Core/BaseAuthHeader.pm
/usr/share/perl5/HTTP/Headers/ActionPack/Core/BaseHeaderList.pm
/usr/share/perl5/HTTP/Headers/ActionPack/Core/BaseHeaderType.pm
/usr/share/perl5/HTTP/Headers/ActionPack/Core/BaseHeaderWithParams.pm
/usr/share/perl5/HTTP/Headers/ActionPack/DateHeader.pm
/usr/share/perl5/HTTP/Headers/ActionPack/LinkHeader.pm
/usr/share/perl5/HTTP/Headers/ActionPack/LinkList.pm
/usr/share/perl5/HTTP/Headers/ActionPack/MediaType.pm
/usr/share/perl5/HTTP/Headers/ActionPack/MediaTypeList.pm
/usr/share/perl5/HTTP/Headers/ActionPack/PriorityList.pm
/usr/share/perl5/HTTP/Headers/ActionPack/Util.pm
/usr/share/perl5/HTTP/Headers/ActionPack/WWWAuthenticate.pm