Groups per member are now stored in the GroupIncludeCache (and not
implicitly in the AccountCache anymore, see I1617c4b0).
GroupsUpdate#updateCachesOnGroupUpdate correctly invalidates the
GroupIncludeCache when the members are added to or removed from a group.
Ieb32d5128 simply missed to switch to the GroupIncludeCache when it was
rebased.
Change-Id: I3bff5b7be8af4667737a46d0594b34c1b126e614