Remove tons of OILPAN.

sky/engine/core/editing/ReplaceSelectionCommand.h

 /*
  * Copyright (C) 2005, 2006, 2008 Apple 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 33 matching lines @@
         MovingParagraph = 1 << 4,
     };
 
     typedef unsigned CommandOptions;
 
     static PassRefPtr<ReplaceSelectionCommand> create(Document& document, PassRefPtr<DocumentFragment> fragment, CommandOptions options, EditAction action = EditActionPaste)
     {
         return adoptRef(new ReplaceSelectionCommand(document, fragment, options, action));
     }
 
-    virtual void trace(Visitor*) override;
-
 private:
     ReplaceSelectionCommand(Document&, PassRefPtr<DocumentFragment>, CommandOptions, EditAction);
 
     virtual void doApply() override;
     virtual EditAction editingAction() const override;
 
     class InsertedNodes {
         STACK_ALLOCATED();
     public:
         void respondToNodeInsertion(Node&);
@@ skipping 45 matching lines @@
     RefPtr<DocumentFragment> m_documentFragment;
     bool m_preventNesting;
     bool m_movingParagraph;
     EditAction m_editAction;
     bool m_shouldMergeEnd;
 };
 
 } // namespace blink
 
 #endif // ReplaceSelectionCommand_h