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diff --git a/Source/WebKit2/Shared/API/APINumber.h b/Source/WebKit2/Shared/API/APINumber.h
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+++ b/Source/WebKit2/Shared/API/APINumber.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 APINumber_h
+#define APINumber_h
+
+#include "APIObject.h"
+#include "Decoder.h"
+#include "Encoder.h"
+
+namespace API {
+
+template<typename NumberType, API::Object::Type APIObjectType>
+class Number : public ObjectImpl<APIObjectType> {
+public:
+    static Ref<Number> create(NumberType value)
+    {
+        return adoptRef(*new Number(value));
+    }
+
+    NumberType value() const { return m_value; }
+
+    void encode(IPC::Encoder& encoder) const
+    {
+        encoder << m_value;
+    }
+
+    static bool decode(IPC::Decoder& decoder, RefPtr<Object>& result)
+    {
+        NumberType value;
+        if (!decoder.decode(value))
+            return false;
+
+        result = Number::create(value);
+        return true;
+    }
+
+private:
+    explicit Number(NumberType value)
+        : m_value(value)
+    {
+    }
+
+    const NumberType m_value;
+};
+
+typedef Number<bool, API::Object::Type::Boolean> Boolean;
+typedef Number<double, API::Object::Type::Double> Double;
+typedef Number<uint64_t, API::Object::Type::UInt64> UInt64;
+
+} // namespace API
+
+#endif // APINumber_h