This is one of steps to stop rebuilding .h/.cpp files generated by unchanged IDLs (bug 76836). In CodeGeneratorGObject.pm, we can merge GeneratePrivateHeader() into WriteData(), so that all code to output .h/.cpp is managed by WriteData(), just like other CodeGenerator*.pm does.
Created attachment 123768 [details] Patch
Comment on attachment 123768 [details] Patch Clearing flags on attachment: 123768 Committed r105803: <http://trac.webkit.org/changeset/105803>
All reviewed patches have been landed. Closing bug.