Rolling v8/build to 10d3723f73a8bfb0bcbee33f368d92dea8ad1bd7

Rolling v8/tools/clang to ef8e028ea0f0fdf3be7be6e817e5c26c8ba7aebe

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

Review-Url: https://codereview.chromium.org/2021623002
Cr-Commit-Position: refs/heads/master@{#36566}