Oilpan: Prepare to move SQLResultSet and SQLResultSetRowList to oilpan heap.

Source/modules/webdatabase/SQLStatement.cpp

Index: Source/modules/webdatabase/SQLStatement.cpp
diff --git a/Source/modules/webdatabase/SQLStatement.cpp b/Source/modules/webdatabase/SQLStatement.cpp
index 0d77191d5ffaf08c224c94ff08494288d530e217..1d883fde2606b5b3fb52487f02f9cc7c73c12db1 100644
--- a/Source/modules/webdatabase/SQLStatement.cpp
+++ b/Source/modules/webdatabase/SQLStatement.cpp
@@ -87,7 +87,7 @@ bool SQLStatement::performCallback(SQLTransaction* transaction)
         if (errorCallback)
             callbackError = errorCallback->handleEvent(transaction, error.get());
     } else if (callback) {
-        RefPtr<SQLResultSet> resultSet = m_backend->sqlResultSet();
+        RefPtrWillBeRawPtr<SQLResultSet> resultSet = m_backend->sqlResultSet();
         callbackError = !callback->handleEvent(transaction, resultSet.get());
     }