Revert "Revert "Remove C++11-ism, until all bots support it.""

This reverts commit 1f07f57a4a13985f3a48b06d2848dd3bff165b4f.

AOSP bot is still not ready.

TBR=svenpanne@chromium.org,vogelheim@chromium.org

Review URL: https://codereview.chromium.org/513103002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23481 ce2b1a6d-e550-0410-aec6-3dcde31c8c00