[Sync] Convert syncable/ directory to ModelEnumSet

chrome/browser/sync/notifier/invalidation_notifier.cc

Index: chrome/browser/sync/notifier/invalidation_notifier.cc
diff --git a/chrome/browser/sync/notifier/invalidation_notifier.cc b/chrome/browser/sync/notifier/invalidation_notifier.cc
index 5834cc7fb59f5bd7cc103fcb4aa6a9c955cb43c7..97bff3427404afd137a7eda590e8cec8757c6ad1 100644
--- a/chrome/browser/sync/notifier/invalidation_notifier.cc
+++ b/chrome/browser/sync/notifier/invalidation_notifier.cc
@@ -92,14 +92,14 @@ void InvalidationNotifier::UpdateCredentials(
 }
 
 void InvalidationNotifier::UpdateEnabledTypes(
-    const syncable::ModelTypeSet& enabled_types) {
+    syncable::ModelEnumSet enabled_types) {
   DCHECK(non_thread_safe_.CalledOnValidThread());
   CHECK(!invalidation_client_id_.empty());
   invalidation_client_.RegisterTypes(enabled_types);
 }
 
 void InvalidationNotifier::SendNotification(
-    const syncable::ModelTypeSet& changed_types) {
+    syncable::ModelEnumSet changed_types) {
   DCHECK(non_thread_safe_.CalledOnValidThread());
   // Do nothing.
 }