Patch by Ryan Dahl <coldredlemur@gmail.com>, see http://codereview.chromium.org/1707013.
Review URL: http://codereview.chromium.org/1732016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4523 ce2b1a6d-e550-0410-aec6-3dcde31c8c00