GitLab

Summary of changes available at:
https://chromium.googlesource.com/chromium/blink/+log/d9e63a2..551f72a

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

Review URL: https://codereview.chromium.org/907523004

Cr-Commit-Position: refs/heads/master@{#315189}