Auto-rebaseline for r171923

http://src.chromium.org/viewvc/blink?view=revision&revision=171923

BUG=352460
TBR=trchen@chromium.org

Review URL: https://codereview.chromium.org/243333004

git-svn-id: svn://svn.chromium.org/blink/trunk@171977 bbb929c8-8fbe-4397-9dbb-9b2b20218538