[Sync] Replace all instances of ModelTypeBitSet with ModelEnumSet

chrome/browser/sync/syncable/syncable.h

Index: chrome/browser/sync/syncable/syncable.h
diff --git a/chrome/browser/sync/syncable/syncable.h b/chrome/browser/sync/syncable/syncable.h
index c699911cd9436b8f3bb7ee3c6c5054402aea731c..0f9fc8473b4fde45c535dd550a584d7b0592cfa9 100644
--- a/chrome/browser/sync/syncable/syncable.h
+++ b/chrome/browser/sync/syncable/syncable.h
@@ -971,14 +971,14 @@ class Directory {
   // Returns all server types with unapplied updates.  A subset of
   // those types can then be passed into
   // GetUnappliedUpdateMetaHandles() below.
-  syncable::ModelTypeBitSet GetServerTypesWithUnappliedUpdates(
+  FullModelEnumSet GetServerTypesWithUnappliedUpdates(
       BaseTransaction* trans) const;
 
   // Get all the metahandles for unapplied updates for a given set of
   // server types.
   typedef std::vector<int64> UnappliedUpdateMetaHandles;
   void GetUnappliedUpdateMetaHandles(BaseTransaction* trans,
-                                     syncable::ModelTypeBitSet server_types,
+                                     FullModelEnumSet server_types,
                                      UnappliedUpdateMetaHandles* result);
 
   // Checks tree metadata consistency.