Revert "Removed useless JobQueue return values"

This reverts commit bc8c89d2df39d64f15770d29874904ebcff2f131.

Bug: 64007

Change-Id: I4b4dbe4637dc50cd4630ef19d54f01efba10e138
(cherry picked from commit c76d5a95c1dd1c3086461feae8bc1c0b688bde1e)