Remove wrong test expectations

NOTRY=True
TBR=kouhei,eae
BUG=397902,422050

Review URL: https://codereview.chromium.org/663863002

git-svn-id: svn://svn.chromium.org/blink/trunk@183911 bbb929c8-8fbe-4397-9dbb-9b2b20218538