Rolling v8/build to 5fbb07a2443f8095963594c2f365f99bad549180

Rolling v8/tools/clang to 0e474b23030b2723dfb3dd0c038746ec2c042469

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

Review-Url: https://codereview.chromium.org/1941543002
Cr-Commit-Position: refs/heads/master@{#35915}