Fix virtual/override/final usage in Source/core/editing/.

Source/core/editing/InsertListCommand.h

 /*
  * Copyright (C) 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 24 matching lines @@
 
 class InsertListCommand final : public CompositeEditCommand {
 public:
     enum Type { OrderedList, UnorderedList };
 
     static PassRefPtrWillBeRawPtr<InsertListCommand> create(Document& document, Type listType)
     {
         return adoptRefWillBeNoop(new InsertListCommand(document, listType));
     }
 
-    virtual bool preservesTypingStyle() const override { return true; }
+    bool preservesTypingStyle() const override { return true; }
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     InsertListCommand(Document&, Type);
 
-    virtual void doApply() override;
-    virtual EditAction editingAction() const override { return EditActionInsertList; }
+    void doApply() override;
+    EditAction editingAction() const override { return EditActionInsertList; }
 
     HTMLUListElement* fixOrphanedListChild(Node*);
     bool selectionHasListOfType(const VisibleSelection&, const HTMLQualifiedName&);
     PassRefPtrWillBeRawPtr<HTMLElement> mergeWithNeighboringLists(PassRefPtrWillBeRawPtr<HTMLElement>);
     void doApplyForSingleParagraph(bool forceCreateList, const HTMLQualifiedName&, Range& currentSelection);
     void unlistifyParagraph(const VisiblePosition& originalStart, HTMLElement* listNode, Node* listChildNode);
     PassRefPtrWillBeRawPtr<HTMLElement> listifyParagraph(const VisiblePosition& originalStart, const HTMLQualifiedName& listTag);
 
     RefPtrWillBeMember<HTMLElement> m_listElement;
     Type m_type;
 };
 
 } // namespace blink
 
 #endif // InsertListCommand_h