Fix TextExpectations keyword for fast/text/international/plane2.html

TBR=ojan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/26733002

git-svn-id: svn://svn.chromium.org/blink/trunk@159248 bbb929c8-8fbe-4397-9dbb-9b2b20218538