Port r18181 (2b41b833)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/99763003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18212 ce2b1a6d-e550-0410-aec6-3dcde31c8c00