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diff --git a/src/libs/xpcom18a4/xpcom/threads/TimerThread.h b/src/libs/xpcom18a4/xpcom/threads/TimerThread.h
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+++ b/src/libs/xpcom18a4/xpcom/threads/TimerThread.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * 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
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 2001
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Stuart Parmenter <pavlov@netscape.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef TimerThread_h___
+#define TimerThread_h___
+
+#include "nsWeakReference.h"
+
+#include "nsIEventQueueService.h"
+#include "nsIObserver.h"
+#include "nsIRunnable.h"
+#include "nsIThread.h"
+
+#include "nsTimerImpl.h"
+
+#include "nsVoidArray.h"
+
+#include "prcvar.h"
+#include "prinrval.h"
+#include "prlock.h"
+
+class TimerThread : public nsSupportsWeakReference,
+                    public nsIRunnable,
+                    public nsIObserver
+{
+public:
+  TimerThread();
+  NS_HIDDEN_(nsresult) InitLocks();
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIRUNNABLE
+  NS_DECL_NSIOBSERVER
+  
+  NS_HIDDEN_(nsresult) Init();
+  NS_HIDDEN_(nsresult) Shutdown();
+
+  nsresult AddTimer(nsTimerImpl *aTimer);
+  nsresult TimerDelayChanged(nsTimerImpl *aTimer);
+  nsresult RemoveTimer(nsTimerImpl *aTimer);
+
+#define FILTER_DURATION         1e3     /* one second */
+#define FILTER_FEEDBACK_MAX     100     /* 1/10th of a second */
+
+  void UpdateFilter(PRUint32 aDelay, PRIntervalTime aTimeout,
+                    PRIntervalTime aNow);
+
+  // For use by nsTimerImpl::Fire()
+  nsCOMPtr<nsIEventQueueService> mEventQueueService;
+
+  void DoBeforeSleep();
+  void DoAfterSleep();
+
+private:
+  ~TimerThread();
+
+  PRInt32 mInitInProgress;
+  PRBool  mInitialized;
+
+  // These two internal helper methods must be called while mLock is held.
+  // AddTimerInternal returns the position where the timer was added in the
+  // list, or -1 if it failed.
+  PRInt32 AddTimerInternal(nsTimerImpl *aTimer);
+  PRBool  RemoveTimerInternal(nsTimerImpl *aTimer);
+
+  nsCOMPtr<nsIThread> mThread;
+  PRLock *mLock;
+  PRCondVar *mCondVar;
+
+  PRPackedBool mShutdown;
+  PRPackedBool mWaiting;
+  PRPackedBool mSleeping;
+  
+  nsVoidArray mTimers;
+
+#define DELAY_LINE_LENGTH_LOG2  5
+#define DELAY_LINE_LENGTH_MASK  PR_BITMASK(DELAY_LINE_LENGTH_LOG2)
+#define DELAY_LINE_LENGTH       PR_BIT(DELAY_LINE_LENGTH_LOG2)
+
+  PRInt32  mDelayLine[DELAY_LINE_LENGTH];
+  PRUint32 mDelayLineCounter;
+  PRUint32 mMinTimerPeriod;     // milliseconds
+  PRInt32  mTimeoutAdjustment;
+};
+
+#endif /* TimerThread_h___ */