Revert "Move functions from handles.cc to where they belong."

This reverts r20802 .

TBR=jarin@chromium.org

Review URL: https://codereview.chromium.org/239543010

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20804 ce2b1a6d-e550-0410-aec6-3dcde31c8c00