Remove OwnPtr from Blink.

third_party/WebKit/Source/modules/webdatabase/SQLTransactionBackend.h

 /*
  * Copyright (C) 2007, 2013 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
@@ skipping 17 matching lines @@
 #ifndef SQLTransactionBackend_h
 #define SQLTransactionBackend_h
 
 #include "modules/webdatabase/DatabaseBasicTypes.h"
 #include "modules/webdatabase/SQLStatement.h"
 #include "modules/webdatabase/SQLTransactionStateMachine.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Deque.h"
 #include "wtf/Forward.h"
 #include "wtf/ThreadingPrimitives.h"
+#include <memory>
 
 namespace blink {
 
 class Database;
 class SQLErrorData;
 class SQLiteTransaction;
 class SQLStatementBackend;
 class SQLTransaction;
 class SQLTransactionBackend;
 class SQLValue;
@@ skipping 55 matching lines @@
     SQLTransactionState nextStateForTransactionError();
     SQLTransactionState runCurrentStatementAndGetNextState();
 
     void getNextStatement();
 
     CrossThreadPersistent<SQLTransaction> m_frontend;
     CrossThreadPersistent<SQLStatementBackend> m_currentStatementBackend;
 
     Member<Database> m_database;
     Member<SQLTransactionWrapper> m_wrapper;
-    OwnPtr<SQLErrorData> m_transactionError;
+    std::unique_ptr<SQLErrorData> m_transactionError;
 
     bool m_hasCallback;
     bool m_hasSuccessCallback;
     bool m_hasErrorCallback;
     bool m_shouldRetryCurrentStatement;
     bool m_modifiedDatabase;
     bool m_lockAcquired;
     bool m_readOnly;
     bool m_hasVersionMismatch;
 
     Mutex m_statementMutex;
     Deque<CrossThreadPersistent<SQLStatementBackend>> m_statementQueue;
 
-    OwnPtr<SQLiteTransaction> m_sqliteTransaction;
+    std::unique_ptr<SQLiteTransaction> m_sqliteTransaction;
 };
 
 } // namespace blink
 
 #endif // SQLTransactionBackend_h