Remove tons of OILPAN.

sky/engine/core/editing/InsertParagraphSeparatorCommand.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 21 matching lines @@
 
 class EditingStyle;
 
 class InsertParagraphSeparatorCommand final : public CompositeEditCommand {
 public:
     static PassRefPtr<InsertParagraphSeparatorCommand> create(Document& document, bool useDefaultParagraphElement = false, bool pasteBlockquoteIntoUnquotedArea = false)
     {
         return adoptRef(new InsertParagraphSeparatorCommand(document, useDefaultParagraphElement, pasteBlockquoteIntoUnquotedArea));
     }
 
-    virtual void trace(Visitor*) override;
-
 private:
     InsertParagraphSeparatorCommand(Document&, bool useDefaultParagraphElement, bool pasteBlockquoteIntoUnquotedArea);
 
     virtual void doApply() override;
 
     void calculateStyleBeforeInsertion(const Position&);
     void getAncestorsInsideBlock(const Node* insertionNode, Element* outerBlock, Vector<RefPtr<Element> >& ancestors);
     PassRefPtr<Element> cloneHierarchyUnderNewBlock(const Vector<RefPtr<Element> >& ancestors, PassRefPtr<Element> blockToInsert);
 
     bool shouldUseDefaultParagraphElement(Element*) const;
 
     virtual bool preservesTypingStyle() const override;
 
     RefPtr<EditingStyle> m_style;
 
     bool m_mustUseDefaultParagraphElement;
 };
 
 }
 
 #endif