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diff --git a/Source/WebKit2/Shared/API/APIDictionary.h b/Source/WebKit2/Shared/API/APIDictionary.h
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+++ b/Source/WebKit2/Shared/API/APIDictionary.h
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+/*
+ * Copyright (C) 2010 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. 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 INC. 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 APIDictionary_h
+#define APIDictionary_h
+
+#include "APIObject.h"
+#include <wtf/HashMap.h>
+#include <wtf/text/StringHash.h>
+#include <wtf/text/WTFString.h>
+
+namespace API {
+
+class Array;
+
+class Dictionary final : public ObjectImpl<Object::Type::Dictionary> {
+public:
+    typedef HashMap<WTF::String, RefPtr<Object>> MapType;
+
+    static Ref<Dictionary> create();
+    static Ref<Dictionary> create(MapType);
+
+    virtual ~Dictionary();
+
+    template<typename T>
+    T* get(const WTF::String& key) const
+    {
+        RefPtr<Object> item = m_map.get(key);
+        if (!item)
+            return 0;
+
+        if (item->type() != T::APIType)
+            return 0;
+
+        return static_cast<T*>(item.get());
+    }
+
+    Object* get(const WTF::String& key) const
+    {
+        return m_map.get(key);
+    }
+
+    Object* get(const WTF::String& key, bool& exists) const
+    {
+        auto it = m_map.find(key);
+        exists = it != m_map.end();
+        return it->value.get();
+    }
+
+    Ref<Array> keys() const;
+
+    bool add(const WTF::String& key, PassRefPtr<Object>);
+    bool set(const WTF::String& key, PassRefPtr<Object>);
+    void remove(const WTF::String& key);
+
+    size_t size() const { return m_map.size(); }
+
+    const MapType& map() const { return m_map; }
+
+protected:
+    explicit Dictionary(MapType);
+
+    MapType m_map;
+};
+
+} // namespace API
+
+#endif // APIDictionary_h