DocumentType.publicId / systemId should never return null as these attributes are not nullable in the IDL:
Instead we should return the empty string. Firefox and Chrome match the specification.
Created attachment 269324 [details]
Comment on attachment 269324 [details]
Clearing flags on attachment: 269324
Committed r195336: <http://trac.webkit.org/changeset/195336>
All reviewed patches have been landed. Closing bug.