Add task profile "Dex2OatBackground".

Bug: 261557677
Test: Presubmit
Change-Id: I33f4d1d2270da82cf90a772ef52b450bcecafec2
Merged-In: I33f4d1d2270da82cf90a772ef52b450bcecafec2
(cherry picked from commit ecfbf9c6f48915b76a62c2668137a985e04d1436)
1 file changed