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diff --git a/Source/WebCore/storage/IDBCursorBackendImpl.h b/Source/WebCore/storage/IDBCursorBackendImpl.h
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+/*
+ * Copyright (C) 2010 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 IDBCursorBackendImpl_h
+#define IDBCursorBackendImpl_h
+
+#if ENABLE(INDEXED_DATABASE)
+
+#include "IDBCursor.h"
+#include "IDBCursorBackendInterface.h"
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+class IDBDatabaseBackendImpl;
+class IDBIndexBackendImpl;
+class IDBKeyRange;
+class IDBObjectStoreBackendInterface;
+class IDBSQLiteDatabase;
+class IDBTransactionBackendInterface;
+class SQLiteDatabase;
+class SQLiteStatement;
+class SerializedScriptValue;
+
+class IDBCursorBackendImpl : public IDBCursorBackendInterface {
+public:
+    static PassRefPtr<IDBCursorBackendImpl> create(IDBSQLiteDatabase* database, PassRefPtr<IDBKeyRange> keyRange, IDBCursor::Direction direction, PassOwnPtr<SQLiteStatement> query, bool isSerializedScriptValueCursor, IDBTransactionBackendInterface* transaction, IDBObjectStoreBackendInterface* objectStore)
+    {
+        return adoptRef(new IDBCursorBackendImpl(database, keyRange, direction, query, isSerializedScriptValueCursor, transaction, objectStore));
+    }
+    virtual ~IDBCursorBackendImpl();
+
+    virtual unsigned short direction() const;
+    virtual PassRefPtr<IDBKey> key() const;
+    virtual PassRefPtr<IDBAny> value() const;
+    virtual void update(PassRefPtr<SerializedScriptValue>, PassRefPtr<IDBCallbacks>, ExceptionCode&);
+    virtual void continueFunction(PassRefPtr<IDBKey>, PassRefPtr<IDBCallbacks>, ExceptionCode&);
+    virtual void deleteFunction(PassRefPtr<IDBCallbacks>, ExceptionCode&);
+
+private:
+    IDBCursorBackendImpl(IDBSQLiteDatabase*, PassRefPtr<IDBKeyRange>, IDBCursor::Direction, PassOwnPtr<SQLiteStatement> query, bool isSerializedScriptValueCursor, IDBTransactionBackendInterface*, IDBObjectStoreBackendInterface*);
+
+    void loadCurrentRow();
+    SQLiteDatabase& database() const;
+
+    static void updateInternal(ScriptExecutionContext*, PassRefPtr<IDBCursorBackendImpl>, PassRefPtr<SerializedScriptValue>, PassRefPtr<IDBCallbacks>);
+    static void continueFunctionInternal(ScriptExecutionContext*, PassRefPtr<IDBCursorBackendImpl>, PassRefPtr<IDBKey>, PassRefPtr<IDBCallbacks>);
+
+    static const int64_t InvalidId = -1;
+
+    RefPtr<IDBSQLiteDatabase> m_database;
+
+    RefPtr<IDBKeyRange> m_keyRange;
+    IDBCursor::Direction m_direction;
+    OwnPtr<SQLiteStatement> m_query;
+    bool m_isSerializedScriptValueCursor;
+    int64_t m_currentId;
+    RefPtr<IDBKey> m_currentKey;
+
+    // m_isSerializedScriptValueCursor will only be available for object cursors.
+    RefPtr<SerializedScriptValue> m_currentSerializedScriptValue;
+    // FIXME: make the primary key available via script for all types of cursors.
+    RefPtr<IDBKey> m_currentIDBKeyValue;
+
+    RefPtr<IDBTransactionBackendInterface> m_transaction;
+    RefPtr<IDBObjectStoreBackendInterface> m_objectStore;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(INDEXED_DATABASE)
+
+#endif // IDBCursorBackendImpl_h