Auto-rebaseline for r171393

http://src.chromium.org/viewvc/blink?view=revision&revision=171393

TBR=pdr@chromium.org

Review URL: https://codereview.chromium.org/236193010

git-svn-id: svn://svn.chromium.org/blink/trunk@171487 bbb929c8-8fbe-4397-9dbb-9b2b20218538