Rolling v8/tools/clang to 693bc799b83f3a0bb2dc9b035a2ba3118398a582

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

Review URL: https://codereview.chromium.org/1546553002

Cr-Commit-Position: refs/heads/master@{#32995}