[USS] Store supports hosting multiple datatypes per database

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 2ad2de14cc1f280d9371d8cf1b8ccd3f6e5ee0f9..4408e41d94142c1bbdd0605ac9db2aa37acdfade 100644
--- a/sync/internal_api/public/base/model_type.h
+++ b/sync/internal_api/public/base/model_type.h
@@ -313,6 +313,11 @@ SYNC_EXPORT ModelTypeSet ModelTypeSetFromValue(const base::ListValue& value);
 // Returns a string corresponding to the syncable tag for this datatype.
 SYNC_EXPORT std::string ModelTypeToRootTag(ModelType type);
 
+// Returns root_tag for |model_type| in ModelTypeInfo.
+// Difference with ModelTypeToRootTag(), this just simply return toor_tag in
+// ModelTypeInfo.
+SYNC_EXPORT const char* GetModelTypeRootTag(ModelType model_type);
+
 // Convert a real model type to a notification type (used for
 // subscribing to server-issued notifications).  Returns true iff
 // |model_type| was a real model type and |notification_type| was
@@ -354,11 +359,6 @@ SYNC_EXPORT bool TypeSupportsHierarchy(ModelType model_type);
 // Returns true if |model_type| supports ordering of sibling entries.
 SYNC_EXPORT bool TypeSupportsOrdering(ModelType model_type);
 
-// Returns root_tag for |model_type| in ModelTypeInfo.
-// Difference with ModelTypeToRootTag(), this just simply return toor_tag in
-// ModelTypeInfo.
-SYNC_EXPORT const char* ModelTypeToTag(ModelType model_type);
-
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_BASE_MODEL_TYPE_H_