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diff --git a/Source/WebCore/storage/IDBLevelDBBackingStore.h b/Source/WebCore/storage/IDBLevelDBBackingStore.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 IDBLevelDBBackingStore_h
+#define IDBLevelDBBackingStore_h
+
+#if ENABLE(INDEXED_DATABASE)
+#if ENABLE(LEVELDB)
+
+#include "IDBBackingStore.h"
+#include <wtf/OwnPtr.h>
+
+namespace WebCore {
+
+class LevelDBComparator;
+class LevelDBDatabase;
+
+class IDBLevelDBBackingStore : public IDBBackingStore {
+public:
+    static PassRefPtr<IDBBackingStore> open(SecurityOrigin*, const String& pathBase, int64_t maximumSize, const String& fileIdentifier, IDBFactoryBackendImpl*);
+    virtual ~IDBLevelDBBackingStore();
+
+    virtual bool extractIDBDatabaseMetaData(const String& name, String& foundVersion, int64_t& foundId);
+    virtual bool setIDBDatabaseMetaData(const String& name, const String& version, int64_t& rowId, bool invalidRowId);
+
+    virtual void getObjectStores(int64_t databaseId, Vector<int64_t>& foundIds, Vector<String>& foundNames, Vector<String>& foundKeyPaths, Vector<bool>& foundAutoIncrementFlags);
+    virtual bool createObjectStore(int64_t databaseId, const String& name, const String& keyPath, bool autoIncrement, int64_t& assignedObjectStoreId);
+    virtual void deleteObjectStore(int64_t databaseId, int64_t objectStoreId);
+    virtual PassRefPtr<ObjectStoreRecordIdentifier> createInvalidRecordIdentifier();
+    virtual String getObjectStoreRecord(int64_t databaseId, int64_t objectStoreId, const IDBKey&);
+    virtual bool putObjectStoreRecord(int64_t databaseId, int64_t objectStoreId, const IDBKey&, const String& value, ObjectStoreRecordIdentifier*);
+    virtual void clearObjectStore(int64_t databaseId, int64_t objectStoreId);
+    virtual void deleteObjectStoreRecord(int64_t databaseId, int64_t objectStoreId, const ObjectStoreRecordIdentifier*);
+    virtual double nextAutoIncrementNumber(int64_t databaseId, int64_t objectStoreId);
+    virtual bool keyExistsInObjectStore(int64_t databaseId, int64_t objectStoreId, const IDBKey&, ObjectStoreRecordIdentifier* foundRecordIdentifier);
+
+    virtual bool forEachObjectStoreRecord(int64_t databaseId, int64_t objectStoreId, ObjectStoreRecordCallback&);
+
+    virtual void getIndexes(int64_t databaseId, int64_t objectStoreId, Vector<int64_t>& foundIds, Vector<String>& foundNames, Vector<String>& foundKeyPaths, Vector<bool>& foundUniqueFlags);
+    virtual bool createIndex(int64_t databaseId, int64_t objectStoreId, const String& name, const String& keyPath, bool isUnique, int64_t& indexId);
+    virtual void deleteIndex(int64_t databaseId, int64_t objectStoreId, int64_t indexId);
+    virtual bool putIndexDataForRecord(int64_t databaseId, int64_t objectStoreId, int64_t indexId, const IDBKey&, const ObjectStoreRecordIdentifier*);
+    virtual bool deleteIndexDataForRecord(int64_t databaseId, int64_t objectStoreId, int64_t indexId, const ObjectStoreRecordIdentifier*);
+    virtual String getObjectViaIndex(int64_t databaseId, int64_t objectStoreId, int64_t indexId, const IDBKey&);
+    virtual PassRefPtr<IDBKey> getPrimaryKeyViaIndex(int64_t databaseId, int64_t objectStoreId, int64_t indexId, const IDBKey&);
+    virtual bool keyExistsInIndex(int64_t databaseId, int64_t objectStoreId, int64_t indexId, const IDBKey&);
+
+    virtual PassRefPtr<Cursor> openObjectStoreCursor(int64_t databaseId, int64_t objectStoreId, const IDBKeyRange*, IDBCursor::Direction);
+    virtual PassRefPtr<Cursor> openIndexKeyCursor(int64_t databaseId, int64_t objectStoreId, int64_t indexId, const IDBKeyRange*, IDBCursor::Direction);
+    virtual PassRefPtr<Cursor> openIndexCursor(int64_t databaseId, int64_t objectStoreId, int64_t indexId, const IDBKeyRange*, IDBCursor::Direction);
+
+    virtual PassRefPtr<Transaction> createTransaction();
+
+private:
+    IDBLevelDBBackingStore(String identifier, IDBFactoryBackendImpl*, LevelDBDatabase*);
+
+    String m_identifier;
+    RefPtr<IDBFactoryBackendImpl> m_factory;
+    OwnPtr<LevelDBDatabase> m_db;
+    OwnPtr<LevelDBComparator> m_comparator;
+};
+
+} // namespace WebCore
+
+
+#endif // ENABLE(LEVELDB)
+#endif // ENABLE(INDEXED_DATABASE)
+
+#endif // IDBLevelDBBackingStore_h