This reverts commit r19829 for breaking the mozilla tests.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/196343003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19830 ce2b1a6d-e550-0410-aec6-3dcde31c8c00