Move Node::isMouseFocusable() to Element.
Created attachment 202885 [details] Lunch for EWS (merged with dependency, not for human consumption)
Created attachment 202886 [details] EWS snack #2
Created attachment 202887 [details] EWS snaque three
Created attachment 202893 [details] Patch
Committed r150692: <http://trac.webkit.org/changeset/150692>