Mark text tests as needing rebaseline after r176244

TBR=dpranke@chromium.org
BUG=

Review URL: https://codereview.chromium.org/338233002

git-svn-id: svn://svn.chromium.org/blink/trunk@176254 bbb929c8-8fbe-4397-9dbb-9b2b20218538