Oilpan: Prepare to move AbstractSQLTransaction and SQLTransaction to Oilpan heap.

Source/modules/webdatabase/SQLTransaction.cpp

 /*
  * Copyright (C) 2007, 2008, 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 30 matching lines @@
 #include "modules/webdatabase/SQLStatementCallback.h"
 #include "modules/webdatabase/SQLStatementErrorCallback.h"
 #include "modules/webdatabase/SQLTransactionCallback.h"
 #include "modules/webdatabase/SQLTransactionClient.h" // FIXME: Should be used in the backend only.
 #include "modules/webdatabase/SQLTransactionErrorCallback.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
-PassRefPtr<SQLTransaction> SQLTransaction::create(Database* db, PassOwnPtr<SQLTransactionCallback> callback,
+PassRefPtrWillBeRawPtr<SQLTransaction> SQLTransaction::create(Database* db, PassOwnPtr<SQLTransactionCallback> callback,
     PassOwnPtr<VoidCallback> successCallback, PassOwnPtr<SQLTransactionErrorCallback> errorCallback,
     bool readOnly)
 {
-    return adoptRef(new SQLTransaction(db, callback, successCallback, errorCallback, readOnly));
+    return adoptRefWillBeNoop(new SQLTransaction(db, callback, successCallback, errorCallback, readOnly));
 }
 
 SQLTransaction::SQLTransaction(Database* db, PassOwnPtr<SQLTransactionCallback> callback,
     PassOwnPtr<VoidCallback> successCallback, PassOwnPtr<SQLTransactionErrorCallback> errorCallback,
     bool readOnly)
     : m_database(db)
     , m_callbackWrapper(callback, db->executionContext())
     , m_successCallbackWrapper(successCallback, db->executionContext())
     , m_errorCallbackWrapper(errorCallback, db->executionContext())
     , m_executeSqlAllowed(false)
     , m_readOnly(readOnly)
 {
     ASSERT(m_database);
     ScriptWrappable::init(this);
 }
 
+void SQLTransaction::trace(Visitor* visitor)
+{
+    visitor->trace(m_database);
+}
+
 bool SQLTransaction::hasCallback() const
 {
     return m_callbackWrapper.hasCallback();
 }
 
 bool SQLTransaction::hasSuccessCallback() const
 {
     return m_successCallbackWrapper.hasCallback();
 }
 
@@ skipping 221 matching lines @@
     m_successCallbackWrapper.clear();
     m_errorCallbackWrapper.clear();
 }
 
 PassOwnPtr<SQLTransactionErrorCallback> SQLTransaction::releaseErrorCallback()
 {
     return m_errorCallbackWrapper.unwrap();
 }
 
 } // namespace WebCore