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diff --git a/Source/WebCore/platform/leveldb/LevelDBSlice.h b/Source/WebCore/platform/leveldb/LevelDBSlice.h
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+++ b/Source/WebCore/platform/leveldb/LevelDBSlice.h
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+/*
+ * Copyright (C) 2011 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:
+ *
+ * 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 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 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 LevelDBSlice_h
+#define LevelDBSlice_h
+
+#if ENABLE(LEVELDB)
+
+#include "PlatformString.h"
+#include <Vector.h>
+
+namespace WebCore {
+
+class LevelDBSlice {
+public:
+    LevelDBSlice(const char* begin, const char* end)
+        : m_begin(begin)
+        , m_end(end)
+    {
+        ASSERT(m_end >= m_begin);
+    }
+
+    LevelDBSlice(const Vector<char>& v)
+        : m_begin(v.data())
+        , m_end(m_begin + v.size())
+    {
+        ASSERT(m_end >= m_begin);
+    }
+
+    ~LevelDBSlice()
+    {
+    }
+
+    const char* begin() const { return m_begin; }
+    const char* end() const { return m_end; }
+
+private:
+    const char* m_begin;
+    const char* m_end;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(LEVELDB)
+#endif // LevelDBSlice_h