Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/9c22ce7..15635a4

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/ed0540f..fe8a3c8

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/c30c6ff..0147ef9

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

Review-Url: https://codereview.chromium.org/2633463005
Cr-Commit-Position: refs/heads/master@{#42302}