Auto-rebaseline for r172783

http://src.chromium.org/viewvc/blink?view=revision&revision=172783

BUG=27987
TBR=robhogan@gmail.com

Review URL: https://codereview.chromium.org/260963005

git-svn-id: svn://svn.chromium.org/blink/trunk@173114 bbb929c8-8fbe-4397-9dbb-9b2b20218538