Auto-rebaseline for r177420

http://src.chromium.org/viewvc/blink?view=revision&revision=177420

BUG=391052
TBR=lushnikov@chromium.org

Review URL: https://codereview.chromium.org/361293004

git-svn-id: svn://svn.chromium.org/blink/trunk@177434 bbb929c8-8fbe-4397-9dbb-9b2b20218538