diff --git a/mozilla/modules/libutil/public/nsStackBasedTimer.h b/mozilla/modules/libutil/public/nsStackBasedTimer.h
deleted file mode 100644
index 7f43f28bc49..00000000000
--- a/mozilla/modules/libutil/public/nsStackBasedTimer.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/* -*- 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 Communicator client code.
- *
- * The Initial Developer of the Original Code is Netscape Communications
- * Corporation.  Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All
- * Rights Reserved.
- *
- * Contributor(s): 
- */
-
-#ifdef __NSSTACKBASEDTIMER_H
-#define __NSSTACKBASEDTIMER_H
-#include "stopwatch.h"
-
-class nsStackBasedTimer {
-public:
-  nsStackBasedTimer(Stopwatch* aStopwatch) { sw = aStopwatch; }
-  ~nsStackBasedTimer() { if (sw) sw->Stop(); }
-
-  void Start(void) { if (sw) sw->Start(PR_FALSE); }
-  void Stop(void) { if (sw) sw->Stop(); }
-  void Reset() { if (sw) sw->Reset(); }
-  void SaveState() { if (sw) sw->SaveState(); }
-  void RestoreState() { if (sw) sw->RestoreState(); }
-  
-private:
-  Stopwatch* sw;
-};
-#endif  // __NSSTACKBASEDTIMER_H
-