Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/9d6666d..41581bc

Rolling v8/tools/swarming_client: https://chromium.googlesource.com/external/swarming.client/+log/5c4eed8..af6b06c

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

Change-Id: If888be1ca55a3eda40e6e6dd7e38f351d3b3ab6d
Reviewed-on: https://chromium-review.googlesource.com/527359Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45799}