Port r20751 (18578019)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/239803004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20783 ce2b1a6d-e550-0410-aec6-3dcde31c8c00