Auto-rebaseline for r157966

http://src.chromium.org/viewvc/blink?view=revision&revision=157966

TBR=mkwst@chromium.org

Review URL: https://codereview.chromium.org/23707049

git-svn-id: svn://svn.chromium.org/blink/trunk@157977 bbb929c8-8fbe-4397-9dbb-9b2b20218538