tree d4fd0938b84e43d98dacbc584c4b9dea9bcc1fc2
parent fa096a16f8cf8087ecabd11b753af6419323a94a
author Alice Kober-Sotzek <aliceks@google.com> 1507811076 +0200
committer David Ostrovsky <david@ostrovsky.org> 1519197041 +0100

Cache groups by member outside of the account cache

Originally, we cached those groups as part of AccountState in the
account cache. Since we don't want the account cache to depend on the
group index but still want any usages of the methods of
IncludingGroupMembership to be reasonably fast, we need to cache
those groups in an own cache.

Change-Id: I1617c4b0fcfa358b08d2e714499d59b1aba82550