Add Sync data type for managed users.

sync/internal_api/public/base/model_type.h

Index: sync/internal_api/public/base/model_type.h
diff --git a/sync/internal_api/public/base/model_type.h b/sync/internal_api/public/base/model_type.h
index 268715a9b99c52ff626e20125f497a8b82286fd4..dfb0cbfb5ca78ca32aedb602f8d3e4c9180d2829 100644
--- a/sync/internal_api/public/base/model_type.h
+++ b/sync/internal_api/public/base/model_type.h
@@ -95,6 +95,8 @@ enum ModelType {
   PRIORITY_PREFERENCES,
   // Managed user settings.
   MANAGED_USER_SETTINGS,
+  // Managed users.

[tim (not reviewing), 2013/05/23 18:23:27]

MANAGED_USER_LISTS?  

It would help to explain what "managed" means in this context.

Also, are there encryption expectations around this or MU_SETTINGS?

[Bernhard Bauer, 2013/05/23 20:08:17]

Hm, but each individual data items is a single managed user, so would it  be
MANAGED_USER_LIST?
Done.
Both should not be encrypted.

+  MANAGED_USERS,
 
   // ---- Proxy types ----
   // Proxy types are excluded from the sync protocol, but are still considered