Auto-rebaseline for r178481

http://src.chromium.org/viewvc/blink?view=revision&revision=178481

BUG=243871
TBR=ajuma@chromium.org

Review URL: https://codereview.chromium.org/411723005

git-svn-id: svn://svn.chromium.org/blink/trunk@178700 bbb929c8-8fbe-4397-9dbb-9b2b20218538