In my opinion it would be better to just mimic Chrome, function keys (F1&F2) are a bit odd :)
Created attachment 205722 [details] Patch
Comment on attachment 205722 [details] Patch great! r=me.
Comment on attachment 205722 [details] Patch Clearing flags on attachment: 205722 Committed r152179: <http://trac.webkit.org/changeset/152179>
All reviewed patches have been landed. Closing bug.