Rebaseline some Mac expectations after SVG font removal

More fallout from https://codereview.chromium.org/656913006.

R=pdr@chromium.org
TBR=pdr@chromium.org

Review URL: https://codereview.chromium.org/636273005

git-svn-id: svn://svn.chromium.org/blink/trunk@184391 bbb929c8-8fbe-4397-9dbb-9b2b20218538