Rolling v8/tools/clang to 071be3c47dbf2dfb347629bbfb0afe462cbc571b

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Review URL: https://codereview.chromium.org/1379053003

Cr-Commit-Position: refs/heads/master@{#31091}