diff -r 000000000000 -r 6474c204b198 toolkit/components/passwordmgr/nsILoginMetaInfo.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/passwordmgr/nsILoginMetaInfo.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,53 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+#include "nsISupports.idl"
+
+[scriptable, uuid(20d8eb40-c494-497f-b2a6-aaa32f807ebd)]
+
+/**
+ * An object containing metainfo for a login stored by the login manager.
+ *
+ * Code using login manager can generally ignore this interface. When adding
+ * logins, default value will be created. When modifying logins, these
+ * properties will be unchanged unless a change is explicitly requested [by
+ * using modifyLogin() with a nsIPropertyBag]. When deleting a login or
+ * comparing logins, these properties are ignored.
+ */
+interface nsILoginMetaInfo : nsISupports {
+    /**
+     * The GUID to uniquely identify the login. This can be any arbitrary
+     * string, but a format as created by nsIUUIDGenerator is recommended.
+     * For example, "{d4e1a1f6-5ea0-40ee-bff5-da57982f21cf}"
+     *
+     * addLogin will generate a random value unless a value is provided.
+     *
+     * addLogin and modifyLogin will throw if the GUID already exists.
+     */
+    attribute AString guid;
+
+    /**
+     * The time, in Unix Epoch milliseconds, when the login was first created.
+     */
+    attribute unsigned long long timeCreated;
+
+    /**
+     * The time, in Unix Epoch milliseconds, when the login was last submitted
+     * in a form or used to begin an HTTP auth session.
+     */
+    attribute unsigned long long timeLastUsed;
+
+    /**
+     * The time, in Unix Epoch milliseconds, when the login's password was
+     * last modified.
+     */
+    attribute unsigned long long timePasswordChanged;
+
+    /**
+     * The number of times the login was submitted in a form or used to begin
+     * an HTTP auth session.
+     */
+    attribute unsigned long timesUsed;
+};