Auto-rebaseline for r178446

http://src.chromium.org/viewvc/blink?view=revision&revision=178446

BUG=266214
TBR=dominik.rottsches@intel.com

Review URL: https://codereview.chromium.org/406693006

git-svn-id: svn://svn.chromium.org/blink/trunk@178494 bbb929c8-8fbe-4397-9dbb-9b2b20218538