After r150214, (bug 116185) Page::chrome() now returns a reference, but not all code was adapted to handle this.
In particular this breaks the GTK+ debug builds.
Created attachment 202080 [details]
Created attachment 202087 [details]
I noticed that Gustavo fixed the GTK+ part in r150256.
I've just uploaded an updated patch without that file.
Comment on attachment 202087 [details]
Clearing flags on attachment: 202087
Committed r150263: <http://trac.webkit.org/changeset/150263>
All reviewed patches have been landed. Closing bug.