Oilpan: move editing objects to the heap.

Source/core/editing/MoveSelectionCommand.cpp

 /*
  * Copyright (C) 2005, 2006 Apple Computer, 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 65 matching lines @@
     if (m_smartInsert)
         options |= ReplaceSelectionCommand::SmartReplace;
     applyCommandToComposite(ReplaceSelectionCommand::create(document(), m_fragment, options));
 }
 
 EditAction MoveSelectionCommand::editingAction() const
 {
     return EditActionDrag;
 }
 
+void MoveSelectionCommand::trace(Visitor* visitor)
+{
+    visitor->trace(m_fragment);
+    visitor->trace(m_position);
+    CompositeEditCommand::trace(visitor);
+}
+
 } // namespace WebCore