Auto-rebaseline for r173171

http://src.chromium.org/viewvc/blink?view=revision&revision=173171

BUG=369376
TBR=noel@chromium.org

Review URL: https://codereview.chromium.org/267933003

git-svn-id: svn://svn.chromium.org/blink/trunk@173240 bbb929c8-8fbe-4397-9dbb-9b2b20218538