Build fix after r25015

TBR=yangguo@chromium.org, machenbach@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/688803003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25016 ce2b1a6d-e550-0410-aec6-3dcde31c8c00