Auto-rebaseline for r177608

http://src.chromium.org/viewvc/blink?view=revision&revision=177608

BUG=391036
TBR=chrishtr@chromium.org

Review URL: https://codereview.chromium.org/372393003

git-svn-id: svn://svn.chromium.org/blink/trunk@177693 bbb929c8-8fbe-4397-9dbb-9b2b20218538