Rolling v8/build/gyp to b85ad3e578da830377dbc1843aa4fbc5af17a192

Rolling v8/tools/clang to f8fd8b699f6c474577b455e55b22df23ceaa2da8

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

Review URL: https://codereview.chromium.org/1527613005

Cr-Commit-Position: refs/heads/master@{#32849}