Auto-rebaseline for r156451

http://src.chromium.org/viewvc/blink?view=revision&revision=156451

BUG=271747
TBR=rbyers@chromium.org

Review URL: https://codereview.chromium.org/22882008

git-svn-id: svn://svn.chromium.org/blink/trunk@156462 bbb929c8-8fbe-4397-9dbb-9b2b20218538