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diff --git a/chromium/third_party/WebKit/Source/core/animation/interpolation/DeferredLegacyStyleInterpolation.h b/chromium/third_party/WebKit/Source/core/animation/interpolation/DeferredLegacyStyleInterpolation.h
new file mode 100644
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+++ b/chromium/third_party/WebKit/Source/core/animation/interpolation/DeferredLegacyStyleInterpolation.h
@@ -0,0 +1,53 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef DeferredLegacyStyleInterpolation_h
+#define DeferredLegacyStyleInterpolation_h
+
+#include "core/animation/interpolation/StyleInterpolation.h"
+#include "core/css/CSSValue.h"
+
+namespace WebCore {
+
+class CSSBasicShape;
+class CSSImageValue;
+class CSSPrimitiveValue;
+class CSSShadowValue;
+class CSSSVGDocumentValue;
+class CSSValueList;
+
+class DeferredLegacyStyleInterpolation : public StyleInterpolation {
+public:
+    static PassRefPtrWillBeRawPtr<DeferredLegacyStyleInterpolation> create(PassRefPtrWillBeRawPtr<CSSValue> start, PassRefPtrWillBeRawPtr<CSSValue> end, CSSPropertyID id)
+    {
+        return adoptRefWillBeNoop(new DeferredLegacyStyleInterpolation(start, end, id));
+    }
+
+    virtual void apply(StyleResolverState&) const OVERRIDE;
+
+    virtual void trace(Visitor*) OVERRIDE;
+
+    static bool interpolationRequiresStyleResolve(const CSSValue&);
+    static bool interpolationRequiresStyleResolve(const CSSPrimitiveValue&);
+    static bool interpolationRequiresStyleResolve(const CSSImageValue&);
+    static bool interpolationRequiresStyleResolve(const CSSShadowValue&);
+    static bool interpolationRequiresStyleResolve(const CSSSVGDocumentValue&);
+    static bool interpolationRequiresStyleResolve(const CSSValueList&);
+    static bool interpolationRequiresStyleResolve(const CSSBasicShape&);
+
+private:
+    DeferredLegacyStyleInterpolation(PassRefPtrWillBeRawPtr<CSSValue> start, PassRefPtrWillBeRawPtr<CSSValue> end, CSSPropertyID id)
+        : StyleInterpolation(InterpolableNumber::create(0), InterpolableNumber::create(1), id)
+        , m_startCSSValue(start)
+        , m_endCSSValue(end)
+    {
+    }
+
+    RefPtrWillBeMember<CSSValue> m_startCSSValue;
+    RefPtrWillBeMember<CSSValue> m_endCSSValue;
+};
+
+}
+
+#endif