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

Source/core/clipboard/DataObject.cpp

 /*
  * Copyright (c) 2008, 2009, 2012 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 83 matching lines @@
 }
 
 PassRefPtrWillBeRawPtr<DataObjectItem> DataObject::add(const String& data, const String& type)
 {
     RefPtrWillBeRawPtr<DataObjectItem> item = DataObjectItem::createFromString(type, data);
     if (!internalAddStringItem(item))
         return nullptr;
     return item;
 }
 
-PassRefPtrWillBeRawPtr<DataObjectItem> DataObject::add(PassRefPtr<File> file)
+PassRefPtrWillBeRawPtr<DataObjectItem> DataObject::add(PassRefPtrWillBeRawPtr<File> file)
 {
     if (!file)
         return nullptr;
 
     RefPtrWillBeRawPtr<DataObjectItem> item = DataObjectItem::createFromFile(file);
     m_itemList.append(item);
     return item;
 }
 
 void DataObject::clearData(const String& type)
@@ skipping 151 matching lines @@
     ASSERT(item->kind() == DataObjectItem::FileKind);
     m_itemList.append(item);
 }
 
 void DataObject::trace(Visitor* visitor)
 {
     visitor->trace(m_itemList);
 }
 
 } // namespace WebCore