add ab upgrader interface, NOT PART OF BUILD

mailnews/addrbook/public/nsIAbUpgrader.idl

@@ -0,0 +1,30 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 2000 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+#include "nsISupports.idl"
+#include "nsIFileSpec.idl"
+
+[scriptable, uuid(abd6c760-f396-11d3-b9fa-00108335942a)]    
+interface nsIAbUpgrader : nsISupports {
+
+	void Upgrade4xAddrBook(in nsIFileSpec sourceAddrBook, in nsIFileSpec destAddrBook);
+};