Fix erroneous test expectation.

TBR=wjmaclean@chromium.org
BUG=14885

Review URL: https://codereview.chromium.org/25517002

git-svn-id: svn://svn.chromium.org/blink/trunk@158629 bbb929c8-8fbe-4397-9dbb-9b2b20218538