Auto-rebaseline for r173979

http://src.chromium.org/viewvc/blink?view=revision&revision=173979

BUG=350599
TBR=aelias@chromium.org

Review URL: https://codereview.chromium.org/280383011

git-svn-id: svn://svn.chromium.org/blink/trunk@173999 bbb929c8-8fbe-4397-9dbb-9b2b20218538