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diff --git a/chromium/third_party/WebKit/Source/core/rendering/style/ShadowList.h b/chromium/third_party/WebKit/Source/core/rendering/style/ShadowList.h
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+/*
+ * Copyright (C) 2013 Google 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER 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.
+ */
+
+#ifndef ShadowList_h
+#define ShadowList_h
+
+#include "core/rendering/style/ShadowData.h"
+#include "wtf/RefCounted.h"
+#include "wtf/Vector.h"
+
+namespace WebCore {
+
+class FloatRect;
+class LayoutRect;
+
+typedef Vector<ShadowData, 1> ShadowDataVector;
+
+// These are used to store shadows in specified order, but we usually want to
+// iterate over them backwards as the first-specified shadow is painted on top.
+class ShadowList : public RefCounted<ShadowList> {
+public:
+    // This consumes passed in vector.
+    static PassRefPtr<ShadowList> adopt(ShadowDataVector& shadows)
+    {
+        return adoptRef(new ShadowList(shadows));
+    }
+    const ShadowDataVector& shadows() const { return m_shadows; }
+    bool operator==(const ShadowList& o) const { return m_shadows == o.m_shadows; }
+    bool operator!=(const ShadowList& o) const { return !(*this == o); }
+
+    static PassRefPtr<ShadowList> blend(const ShadowList* from, const ShadowList* to, double progress);
+
+    void adjustRectForShadow(LayoutRect&, int additionalOutlineSize = 0) const;
+    void adjustRectForShadow(FloatRect&, int additionalOutlineSize = 0) const;
+
+private:
+    ShadowList(ShadowDataVector& shadows)
+    {
+        // If we have no shadows, we use a null ShadowList
+        ASSERT(!shadows.isEmpty());
+        m_shadows.swap(shadows);
+        m_shadows.shrinkToFit();
+    }
+    ShadowDataVector m_shadows;
+};
+
+} // namespace WebCore
+
+#endif // ShadowList_h