Auto-rebaseline for r173970

http://src.chromium.org/viewvc/blink?view=revision&revision=173970

TBR=hartmanng@chromium.org

Review URL: https://codereview.chromium.org/280703012

git-svn-id: svn://svn.chromium.org/blink/trunk@173984 bbb929c8-8fbe-4397-9dbb-9b2b20218538