Auto-rebaseline for r172818

http://src.chromium.org/viewvc/blink?view=revision&revision=172818

BUG=169282
TBR=jsbell@chromium.org

Review URL: https://codereview.chromium.org/264953003

git-svn-id: svn://svn.chromium.org/blink/trunk@173119 bbb929c8-8fbe-4397-9dbb-9b2b20218538