Un-suppress transformed-text-fill-pattern.html.

Unofficial gardening: the test passes on all platforms after the update in r154130.

TBR=vsevik@chromium.org

Review URL: https://codereview.chromium.org/18596006

git-svn-id: svn://svn.chromium.org/blink/trunk@154167 bbb929c8-8fbe-4397-9dbb-9b2b20218538