Revert "Disable prefetch for the CIS queue."
Revert "Disable prefetch for the CIS queue."

johngian/mozillians,johngian/mozillians,akatsoulas/mozillians,mozilla/mozillians,mozilla/mozillians,mozilla/mozillians,johngian/mozillians,akatsoulas/mozillians,akatsoulas/mozillians,johngian/mozillians,mozilla/mozillians,akatsoulas/mozillians