Sync: Support nodes with implicit permanent folders: Node Browser and out-of-order loading from DB

sync/syncable/model_type.cc

Index: sync/syncable/model_type.cc
diff --git a/sync/syncable/model_type.cc b/sync/syncable/model_type.cc
index 602582beb2f2cc9dfebb410392fbedd0de2d1b9d..3ef7bac67f48b629cede84a5a5a86ed19dbaed00 100644
--- a/sync/syncable/model_type.cc
+++ b/sync/syncable/model_type.cc
@@ -1216,4 +1216,13 @@ bool IsTypeWithClientGeneratedRoot(ModelType model_type) {
          !IsTypeWithServerGeneratedRoot(model_type);
 }
 
+bool TypeSupportsHierarchy(ModelType model_type) {
+  // TODO(stanisc): crbug/438313: Should this also include TOP_LEVEL_FOLDER?
+  return model_type == BOOKMARKS;
+}
+
+bool TypeSupportsOrdering(ModelType model_type) {
+  return model_type == BOOKMARKS;
+}
+
 }  // namespace syncer