[Oilpan] Prepare full definition of classes before using Member

third_party/WebKit/Source/core/clipboard/DataTransferItem.cpp

 /*
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 67 matching lines @@
 }
 
 Blob* DataTransferItem::getAsFile() const
 {
     if (!m_dataTransfer->canReadData())
         return nullptr;
 
     return m_item->getAsFile();
 }
 
+DataTransfer* DataTransferItem::dataTransfer() const
+{
+    return m_dataTransfer;
+}
+
+DataObjectItem* DataTransferItem::dataObjectItem() const
+{
+    return m_item;
+}
+
 DataTransferItem::DataTransferItem(DataTransfer* dataTransfer, DataObjectItem* item)
     : m_dataTransfer(dataTransfer)
     , m_item(item)
 {
 }
 
 DEFINE_TRACE(DataTransferItem)
 {
     visitor->trace(m_dataTransfer);
     visitor->trace(m_item);
 }
 
 } // namespace blink