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diff --git a/Source/WebCore/page/animation/AnimationController.h b/Source/WebCore/page/animation/AnimationController.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 AnimationController_h
+#define AnimationController_h
+
+#include "CSSPropertyNames.h"
+#include <wtf/Forward.h>
+
+namespace WebCore {
+
+class AnimationBase;
+class AnimationControllerPrivate;
+class Document;
+class Element;
+class Frame;
+class Node;
+class RenderObject;
+class RenderStyle;
+
+class AnimationController {
+public:
+    AnimationController(Frame*);
+    ~AnimationController();
+
+    void cancelAnimations(RenderObject*);
+    PassRefPtr<RenderStyle> updateAnimations(RenderObject*, RenderStyle* newStyle);
+    PassRefPtr<RenderStyle> getAnimatedStyleForRenderer(RenderObject*);
+
+    // This is called when an accelerated animation or transition has actually started to animate.
+    void notifyAnimationStarted(RenderObject*, double startTime);
+
+    bool pauseAnimationAtTime(RenderObject*, const String& name, double t); // To be used only for testing
+    bool pauseTransitionAtTime(RenderObject*, const String& property, double t); // To be used only for testing
+    unsigned numberOfActiveAnimations() const; // To be used only for testing
+    
+    bool isRunningAnimationOnRenderer(RenderObject*, CSSPropertyID, bool isRunningNow = true) const;
+    bool isRunningAcceleratedAnimationOnRenderer(RenderObject*, CSSPropertyID, bool isRunningNow = true) const;
+
+    void suspendAnimations();
+    void resumeAnimations();
+
+    void suspendAnimationsForDocument(Document*);
+    void resumeAnimationsForDocument(Document*);
+
+    void beginAnimationUpdate();
+    void endAnimationUpdate();
+    
+    static bool supportsAcceleratedAnimationOfProperty(CSSPropertyID);
+
+private:
+    AnimationControllerPrivate* m_data;
+};
+
+} // namespace WebCore
+
+#endif // AnimationController_h