diff --git a/mozilla/embedding/components/windowwatcher/public/nsINonBlockingAlertService.idl b/mozilla/embedding/components/windowwatcher/public/nsINonBlockingAlertService.idl
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+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1
+ *
+ * The contents of this file are subject to the Mozilla 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/MPL/
+ *
+ * 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
+ * YAMASHITA Makoto <makotoy@ms.u-tokyo.ac.jp>.
+ * Portions created by the Initial Developer are Copyright (C) 2006
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "nsISupports.idl"
+interface nsIDOMWindow;
+
+/**
+ * This is the interface to the embeddable non-blocking alert
+ * service.  A non-blocking alert is a less serious informative alert
+ * that does not need to block the program's execution to get the
+ * user's response.
+ *
+ * The way to present the alert is left to the implementations.  It
+ * may be a dialog separate from the parent window, or a window-modal
+ * sheet (as the ones in Mac OS X) attached to the parent.
+ */
+[scriptable, uuid(E800EF97-AE37-46B7-A46C-31FBE79657EA)]
+interface nsINonBlockingAlertService : nsISupports {
+  /**
+   * This shows a non-blocking alert with the specified title and
+   * message text. This function requires a valid parent window with
+   * which the alert is associated.
+   *
+   * @param aParent
+   *        The parent window. This must not be null.
+   * @param aDialogTitle
+   *        Text to appear in the title of the alert.
+   * @param aText
+   *        Text to appear in the body of the alert.
+   */
+  void showNonBlockingAlert(in nsIDOMWindow aParent,
+			    in wstring aDialogTitle, in wstring aText);
+};