Gardening: rebaseline Oilpan image expectations for several virtual/windows-directwrite tests

TBR=esprehn

Review URL: https://codereview.chromium.org/298013005

git-svn-id: svn://svn.chromium.org/blink/trunk@174815 bbb929c8-8fbe-4397-9dbb-9b2b20218538