Port r18847 (c920fc50)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/145583012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18863 ce2b1a6d-e550-0410-aec6-3dcde31c8c00