Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/ec00334..7770b47

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

Change-Id: Ib4ad4ffc4ecd2c8a2bd89292c16cadab4653091e
Reviewed-on: https://chromium-review.googlesource.com/603155Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47180}