Rolling v8/tools/clang to a14766ac344d97871f75e60c4dd39385a6cd2865

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

Review-Url: https://codereview.chromium.org/1936953003
Cr-Commit-Position: refs/heads/master@{#35919}