BUG=v8:1678

Review URL: http://codereview.chromium.org/8513012
Patch from Matthew Sporleder <msporleder@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10008 ce2b1a6d-e550-0410-aec6-3dcde31c8c00