Rolling v8/build to d158ac9f154829bb0a57c2fd398972482cebef28

Rolling v8/tools/clang to eebeb555075fbd7bb86829d37f1f7b7d6f10c8e3

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

Review-Url: https://codereview.chromium.org/2261613002
Cr-Commit-Position: refs/heads/master@{#38734}