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diff --git a/Source/WebCore/css/CSSNamedImageValue.h b/Source/WebCore/css/CSSNamedImageValue.h
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+++ b/Source/WebCore/css/CSSNamedImageValue.h
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+/*
+ * Copyright (C) 2015 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 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 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.
+ */
+
+#pragma once
+
+#include "CSSImageGeneratorValue.h"
+#include "Image.h"
+
+namespace WebCore {
+
+class CSSNamedImageValue final : public CSSImageGeneratorValue {
+public:
+    static Ref<CSSNamedImageValue> create(const String& name)
+    {
+        return adoptRef(*new CSSNamedImageValue(name));
+    }
+
+    String customCSSText() const;
+
+    bool isFixedSize() const { return false; }
+    bool isPending() const { return false; }
+
+    RefPtr<Image> image(RenderElement*, const FloatSize&);
+
+    bool equals(const CSSNamedImageValue&) const;
+
+private:
+    explicit CSSNamedImageValue(const String& name)
+        : CSSImageGeneratorValue(NamedImageClass)
+        , m_name(name)
+    {
+    }
+
+    String m_name;
+};
+
+} // namespace WebCore
+
+SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSNamedImageValue, isNamedImageValue())