Rolling v8/tools/clang to 48322a540c208cda85790c2a6df4c4d335b191e1

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

Review URL: https://codereview.chromium.org/1552433002

Cr-Commit-Position: refs/heads/master@{#33041}