Oilpan: move core/fileapi to oilpan's heap.

Source/core/clipboard/DataTransferItemList.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2008, 2009 Google Inc.
  *
  * 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 74 matching lines @@
     if (!m_clipboard->canWriteData())
         return nullptr;
     RefPtrWillBeRawPtr<DataObjectItem> item = m_dataObject->add(data, type);
     if (!item) {
         exceptionState.throwDOMException(NotSupportedError, "An item already exists for type '" + type + "'.");
         return nullptr;
     }
     return DataTransferItem::create(m_clipboard, item);
 }
 
-PassRefPtrWillBeRawPtr<DataTransferItem> DataTransferItemList::add(PassRefPtr<File> file)
+PassRefPtrWillBeRawPtr<DataTransferItem> DataTransferItemList::add(PassRefPtrWillBeRawPtr<File> file)
 {
     if (!m_clipboard->canWriteData())
         return nullptr;
     RefPtrWillBeRawPtr<DataObjectItem> item = m_dataObject->add(file);
     if (!item)
         return nullptr;
     return DataTransferItem::create(m_clipboard, item);
 }
 
 DataTransferItemList::DataTransferItemList(PassRefPtrWillBeRawPtr<Clipboard> clipboard, PassRefPtrWillBeRawPtr<DataObject> dataObject)
     : m_clipboard(clipboard)
     , m_dataObject(dataObject)
 {
     ScriptWrappable::init(this);
 }
 
 void DataTransferItemList::trace(Visitor* visitor)
 {
     visitor->trace(m_clipboard);
     visitor->trace(m_dataObject);
 }
 
 } // namespace WebCore