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diff --git a/Source/WebCore/css/WebKitCSSMixFunctionValue.h b/Source/WebCore/css/WebKitCSSMixFunctionValue.h
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+++ b/Source/WebCore/css/WebKitCSSMixFunctionValue.h
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+/*
+ * Copyright (C) 2012 Adobe Systems Incorporated. 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 THE COPYRIGHT HOLDER “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 THE COPYRIGHT HOLDER 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 WebKitCSSMixFunctionValue_h
+#define WebKitCSSMixFunctionValue_h
+
+#if ENABLE(CSS_SHADERS)
+
+#include "CSSValueList.h"
+#include <wtf/PassRefPtr.h>
+
+namespace WebCore {
+    
+class WebKitCSSMixFunctionValue : public CSSValueList {
+public:
+    static PassRefPtr<WebKitCSSMixFunctionValue> create()
+    {
+        return adoptRef(new WebKitCSSMixFunctionValue());
+    }
+
+    String customCssText() const;
+
+    PassRefPtr<WebKitCSSMixFunctionValue> cloneForCSSOM() const;
+
+    void reportDescendantMemoryUsage(MemoryObjectInfo*) const;
+
+private:
+    WebKitCSSMixFunctionValue();
+    WebKitCSSMixFunctionValue(const WebKitCSSMixFunctionValue& cloneFrom);
+};
+    
+} // namespace WebCore
+
+#endif // ENABLE(CSS_SHADERS)
+
+#endif