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diff --git a/Source/WebCore/loader/ProgressTracker.h b/Source/WebCore/loader/ProgressTracker.h
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+++ b/Source/WebCore/loader/ProgressTracker.h
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+/*
+ * Copyright (C) 2007 Apple Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#ifndef ProgressTracker_h
+#define ProgressTracker_h
+
+#include <wtf/HashMap.h>
+#include <wtf/Noncopyable.h>
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+class Frame;
+class ResourceResponse;
+struct ProgressItem;
+
+class ProgressTracker : public Noncopyable {
+public:
+    ProgressTracker();
+    ~ProgressTracker();
+    
+    static unsigned long createUniqueIdentifier();
+
+    double estimatedProgress() const;
+
+    void progressStarted(Frame*);
+    void progressCompleted(Frame*);
+    
+    void incrementProgress(unsigned long identifier, const ResourceResponse&);
+    void incrementProgress(unsigned long identifier, const char*, int);
+    void completeProgress(unsigned long identifier);
+
+    long long totalPageAndResourceBytesToLoad() const { return m_totalPageAndResourceBytesToLoad; }
+    long long totalBytesReceived() const { return m_totalBytesReceived; }
+
+private:
+    void reset();
+    void finalProgressComplete();
+    
+    static unsigned long s_uniqueIdentifier;
+    
+    long long m_totalPageAndResourceBytesToLoad;
+    long long m_totalBytesReceived;
+    double m_lastNotifiedProgressValue;
+    double m_lastNotifiedProgressTime;
+    double m_progressNotificationInterval;
+    double m_progressNotificationTimeInterval;
+    bool m_finalProgressChangedSent;    
+    double m_progressValue;
+    RefPtr<Frame> m_originatingProgressFrame;
+    
+    int m_numProgressTrackedFrames;
+    HashMap<unsigned long, ProgressItem*> m_progressItems;
+};
+    
+}
+
+#endif