Apparently, this wasn't the cause for dromaeo regressions.

> BUG=none
> R=jkummerow@chromium.org
>
> Review URL: https://codereview.chromium.org/26457002

R=verwaest@chromium.org, jkummerow@chromium.org

Review URL: https://codereview.chromium.org/36843002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17519 ce2b1a6d-e550-0410-aec6-3dcde31c8c00