Rolling v8/tools/clang to 5b7bd8a08ae5ee5262c38e01f5b703cc193074d4

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

Review URL: https://codereview.chromium.org/1502873002

Cr-Commit-Position: refs/heads/master@{#32631}