Rolling v8/build to 52f474cdb9e67007b938fd4a47220cb3c012e5e8

Rolling v8/third_party/WebKit/Source/platform/inspector_protocol to 84d90b2cc3f01a39bf73a8119a5cec0337d00c9f

Rolling v8/tools/clang to 3e1948978834c16073c1b076410df1a80adda1f5

Rolling v8/tools/mb to ac239cc82ef08858d6f2b75216dd13afcdbc6ac3

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

Committed: https://crrev.com/3b8a2e5129fec64674bb0191cba5aa4592d08d5f
Review-Url: https://codereview.chromium.org/2289063002
Cr-Original-Commit-Position: refs/heads/master@{#38995}
Cr-Commit-Position: refs/heads/master@{#39010}