fix return values for cookie API
fix return values for cookie API

lognormal/boomerang,levexis/boomerang,forcedotcom/kylie,forcedotcom/kylie,FredXue/boomerang,lognormal/boomerang,FredXue/boomerang,sdgdsffdsfff/boomerang,levexis/boomerang,yahoo/boomerang,sdgdsffdsfff/boomerang