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

Source/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 39 matching lines @@
     static PassRefPtrWillBeRawPtr<ReplaceSelectionCommand> create(Document& document, PassRefPtrWillBeRawPtr<DocumentFragment> fragment, CommandOptions options, EditAction action = EditActionPaste)
     {
         return adoptRefWillBeNoop(new ReplaceSelectionCommand(document, fragment, options, action));
     }
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     ReplaceSelectionCommand(Document&, PassRefPtrWillBeRawPtr<DocumentFragment>, CommandOptions, EditAction);
 
-    virtual void doApply() override;
-    virtual EditAction editingAction() const override;
+    void doApply() override;
+    EditAction editingAction() const override;
 
     class InsertedNodes {
         STACK_ALLOCATED();
     public:
         void respondToNodeInsertion(Node&);
         void willRemoveNodePreservingChildren(Node&);
         void willRemoveNode(Node&);
         void didReplaceNode(Node&, Node& newNode);
 
         Node* firstNodeInserted() const { return m_firstNodeInserted.get(); }
@@ skipping 43 matching lines @@
     bool m_preventNesting;
     bool m_movingParagraph;
     EditAction m_editAction;
     bool m_sanitizeFragment;
     bool m_shouldMergeEnd;
 };
 
 } // namespace blink
 
 #endif // ReplaceSelectionCommand_h