They carry no information and generate unused variable warning with GCC 4.8 in a lot of source files.
Created attachment 273857 [details] Patch
Comment on attachment 273857 [details] Patch r=me
Comment on attachment 273857 [details] Patch Clearing flags on attachment: 273857 Committed r198076: <http://trac.webkit.org/changeset/198076>
All reviewed patches have been landed. Closing bug.