Auto-rebaseline for r179974

http://src.chromium.org/viewvc/blink?view=revision&revision=179974

BUG=402493
TBR=senorblanco@chromium.org

Review URL: https://codereview.chromium.org/465623003

git-svn-id: svn://svn.chromium.org/blink/trunk@179987 bbb929c8-8fbe-4397-9dbb-9b2b20218538