Change addHolder calls to addHolders as per change in AbuseFilter

Ia4f6a56f tries to change addHolder to addHolders, this change is dependant on that.

Change-Id: I1d89f2b39c9a2f68a2d0cc2858a3f73d6847ba76
Merge "Change addHolder calls to addHolders as per change in AbuseFilter"