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diff --git a/WebCore/platform/graphics/PathTraversalState.h b/WebCore/platform/graphics/PathTraversalState.h
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+++ b/WebCore/platform/graphics/PathTraversalState.h
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+/*
+ * Copyright (C) 2006, 2007 Eric Seidel <eric@webkit.org>
+ *
+ * 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 PathTraversalState_h
+#define PathTraversalState_h
+
+#include "FloatPoint.h"
+#include <wtf/Vector.h>
+
+namespace WebCore {
+    
+    class Path;
+    
+    class PathTraversalState {
+    public:
+        enum PathTraversalAction {
+            TraversalTotalLength,
+            TraversalPointAtLength,
+            TraversalSegmentAtLength,
+            TraversalNormalAngleAtLength
+        };
+        
+        PathTraversalState(PathTraversalAction);
+        
+        float closeSubpath();
+        float moveTo(const FloatPoint&);
+        float lineTo(const FloatPoint&);
+        float quadraticBezierTo(const FloatPoint& newControl, const FloatPoint& newEnd);
+        float cubicBezierTo(const FloatPoint& newControl1, const FloatPoint& newControl2, const FloatPoint& newEnd);
+        
+    public:
+        PathTraversalAction m_action;
+        bool m_success;
+        
+        FloatPoint m_current;
+        FloatPoint m_start;
+        FloatPoint m_control1;
+        FloatPoint m_control2;
+        
+        float m_totalLength;
+        unsigned m_segmentIndex;
+        float m_desiredLength;
+        
+        // For normal calculations
+        FloatPoint m_previous;
+        float m_normalAngle; // degrees
+    };    
+}
+
+#endif