Oilpan: move Range object to the oilpan heap.

Source/core/page/DragData.cpp

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2013 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 114 matching lines @@
 }
 
 bool DragData::containsCompatibleContent() const
 {
     return containsPlainText()
         || containsURL()
         || containsHTML(m_platformDragData)
         || containsFiles();
 }
 
-PassRefPtr<DocumentFragment> DragData::asFragment(LocalFrame* frame, PassRefPtr<Range>, bool, bool&) const
+PassRefPtr<DocumentFragment> DragData::asFragment(LocalFrame* frame, PassRefPtrWillBeRawPtr<Range>, bool, bool&) const
 {
     /*
      * Order is richest format first. On OSX this is:
      * * Web Archive
      * * Filenames
      * * HTML
      * * RTF
      * * TIFF
      * * PICT
      */
@@ skipping 17 matching lines @@
 
 String DragData::droppedFileSystemId() const
 {
     DraggedIsolatedFileSystem* filesystem = DraggedIsolatedFileSystem::from(m_platformDragData);
     if (!filesystem)
         return String();
     return filesystem->filesystemId();
 }
 
 } // namespace WebCore