GitLab

Summary of changes available at:
https://chromium.googlesource.com/chromium/blink/+log/4b9569f..fa53a39

TBR=dcheng@chromium.org,apavlov@chromium.org

Review URL: https://codereview.chromium.org/901853002

Cr-Commit-Position: refs/heads/master@{#314785}