Add the InvalidationState struct to bundle local state about invalidations.

sync/notifier/sync_invalidation_listener.h

Index: sync/notifier/sync_invalidation_listener.h
diff --git a/sync/notifier/sync_invalidation_listener.h b/sync/notifier/sync_invalidation_listener.h
index d1fc079050d1deaa8cb004241aa7638525004281..a1671193dd794429401c989c01807f5a035236db 100644
--- a/sync/notifier/sync_invalidation_listener.h
+++ b/sync/notifier/sync_invalidation_listener.h
@@ -75,7 +75,7 @@ class SyncInvalidationListener
           create_invalidation_client_callback,
       const std::string& client_id, const std::string& client_info,
       const std::string& invalidation_bootstrap_data,
-      const InvalidationVersionMap& initial_max_invalidation_versions,
+      const InvalidationStateMap& initial_invalidation_state_map,
       const WeakHandle<InvalidationStateTracker>& invalidation_state_tracker,
       Delegate* delegate);
 
@@ -142,7 +142,7 @@ class SyncInvalidationListener
   // Owned by |sync_system_resources_|.
   notifier::PushClient* const push_client_;
   SyncSystemResources sync_system_resources_;
-  InvalidationVersionMap max_invalidation_versions_;
+  InvalidationStateMap invalidation_state_map_;
   WeakHandle<InvalidationStateTracker> invalidation_state_tracker_;
   Delegate* delegate_;
   scoped_ptr<invalidation::InvalidationClient> invalidation_client_;