Rolling v8/buildtools to 222bd42ce39d1bd8f08fe089b066f49c469e1cdf

Rolling v8/tools/clang to 3ed46b50b0b4e8c829ea6492bbe357b2b7b8e64a

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

Review URL: https://codereview.chromium.org/1623773002

Cr-Commit-Position: refs/heads/master@{#33479}