Auto-rebaseline for r173773

http://src.chromium.org/viewvc/blink?view=revision&revision=173773

BUG=361729
TBR=danakj@chromium.org

Review URL: https://codereview.chromium.org/278163002

git-svn-id: svn://svn.chromium.org/blink/trunk@173808 bbb929c8-8fbe-4397-9dbb-9b2b20218538