This commit was missed/skipped earlier for some reason.

Ported r8357 (d78dae4)

BUG=
TEST=

Review URL: http://codereview.chromium.org/7809014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9088 ce2b1a6d-e550-0410-aec6-3dcde31c8c00