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diff --git a/WebCore/storage/IDBTransactionBackendImpl.h b/WebCore/storage/IDBTransactionBackendImpl.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 IDBTransactionBackendImpl_h
+#define IDBTransactionBackendImpl_h
+
+#if ENABLE(INDEXED_DATABASE)
+
+#include "DOMStringList.h"
+#include "IDBTransactionBackendInterface.h"
+#include "IDBTransactionCallbacks.h"
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+class IDBDatabaseBackendImpl;
+
+class IDBTransactionBackendImpl : public IDBTransactionBackendInterface {
+public:
+    static PassRefPtr<IDBTransactionBackendInterface> create(DOMStringList* objectStores, unsigned short mode, unsigned long timeout, int id, IDBDatabaseBackendImpl*);
+    virtual ~IDBTransactionBackendImpl() { }
+
+    virtual PassRefPtr<IDBObjectStoreBackendInterface> objectStore(const String& name);
+    virtual unsigned short mode() const { return m_mode; }
+    virtual void scheduleTask(PassOwnPtr<ScriptExecutionContext::Task>);
+    virtual void abort();
+    virtual int id() const { return m_id; }
+    virtual void setCallbacks(IDBTransactionCallbacks* callbacks) { m_callbacks = callbacks; }
+
+private:
+    IDBTransactionBackendImpl(DOMStringList* objectStores, unsigned short mode, unsigned long timeout, int id, IDBDatabaseBackendImpl*);
+
+    RefPtr<DOMStringList> m_objectStoreNames;
+    unsigned short m_mode;
+    unsigned long m_timeout;
+    int m_id;
+    bool m_aborted;
+    RefPtr<IDBTransactionCallbacks> m_callbacks;
+    RefPtr<IDBDatabaseBackendImpl> m_database;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(INDEXED_DATABASE)
+
+#endif // IDBTransactionBackendImpl_h