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diff --git a/Source/WebCore/page/animation/KeyframeAnimation.h b/Source/WebCore/page/animation/KeyframeAnimation.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. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 KeyframeAnimation_h
+#define KeyframeAnimation_h
+
+#include "AnimationBase.h"
+#include "Document.h"
+#include "KeyframeList.h"
+
+namespace WebCore {
+
+class RenderStyle;
+
+// A KeyframeAnimation tracks the state of an explicit animation
+// for a single RenderObject.
+class KeyframeAnimation : public AnimationBase {
+public:
+    static PassRefPtr<KeyframeAnimation> create(const Animation* animation, RenderObject* renderer, int index, CompositeAnimation* compositeAnimation, RenderStyle* unanimatedStyle)
+    {
+        return adoptRef(new KeyframeAnimation(animation, renderer, index, compositeAnimation, unanimatedStyle));
+    };
+
+    virtual void animate(CompositeAnimation*, RenderObject*, const RenderStyle* currentStyle, RenderStyle* targetStyle, RefPtr<RenderStyle>& animatedStyle);
+    virtual void getAnimatedStyle(RefPtr<RenderStyle>& animatedStyle);
+
+    const AtomicString& name() const { return m_keyframes.animationName(); }
+    int index() const { return m_index; }
+    void setIndex(int i) { m_index = i; }
+
+    bool hasAnimationForProperty(int property) const;
+    
+    void setUnanimatedStyle(PassRefPtr<RenderStyle> style) { m_unanimatedStyle = style; }
+    RenderStyle* unanimatedStyle() const { return m_unanimatedStyle.get(); }
+
+    virtual double timeToNextService();
+
+protected:
+    virtual void onAnimationStart(double elapsedTime);
+    virtual void onAnimationIteration(double elapsedTime);
+    virtual void onAnimationEnd(double elapsedTime);
+    virtual bool startAnimation(double timeOffset);
+    virtual void pauseAnimation(double timeOffset);
+    virtual void endAnimation();
+
+    virtual void overrideAnimations();
+    virtual void resumeOverriddenAnimations();
+
+    bool shouldSendEventForListener(Document::ListenerType inListenerType) const;
+    bool sendAnimationEvent(const AtomicString&, double elapsedTime);
+
+    virtual bool affectsProperty(int) const;
+
+    void validateTransformFunctionList();
+
+private:
+    KeyframeAnimation(const Animation* animation, RenderObject*, int index, CompositeAnimation*, RenderStyle* unanimatedStyle);
+    virtual ~KeyframeAnimation();
+    
+    // Get the styles for the given property surrounding the current animation time and the progress between them.
+    void fetchIntervalEndpointsForProperty(int property, const RenderStyle*& fromStyle, const RenderStyle*& toStyle, double& progress) const;
+
+    // The keyframes that we are blending.
+    KeyframeList m_keyframes;
+
+    // The order in which this animation appears in the animation-name style.
+    int m_index;
+    bool m_startEventDispatched;
+
+    // The style just before we started animation
+    RefPtr<RenderStyle> m_unanimatedStyle;
+};
+
+} // namespace WebCore
+
+#endif // KeyframeAnimation_h