Rolling v8/tools/clang to e67c4fe288f02e1d208961b757ff78d5b3e51782

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

Review URL: https://codereview.chromium.org/1744783002

Cr-Commit-Position: refs/heads/master@{#34343}