Rolling v8/build to 1054b60d5e758646a073b0363f3629fa2d953de8

Rolling v8/tools/mb to 0bee3440355ce5cf573b41999b2cbc0e1bcdc415

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

Review-Url: https://codereview.chromium.org/2195743006
Cr-Commit-Position: refs/heads/master@{#38188}