Fix font-face-woff2 expectation.

BUG=357727
TBR=ksakamoto@chromium.org

Review URL: https://codereview.chromium.org/218663002

git-svn-id: svn://svn.chromium.org/blink/trunk@170423 bbb929c8-8fbe-4397-9dbb-9b2b20218538