Implement Navigations for all methods declared returning one
Created attachment 231658 [details] Patch
Committed r169016: <http://trac.webkit.org/changeset/169016>
There's still a test asserting because of this change (or a followup): http://build.webkit.org/results/Apple%20Mavericks%20Debug%20WK2%20(Tests)/r169239%20(4832)/results.html