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

Source/core/dom/NameNodeList.h

Index: Source/core/dom/NameNodeList.h
diff --git a/Source/core/dom/NameNodeList.h b/Source/core/dom/NameNodeList.h
index 62832d103ef0e46fcf5b9b4193957832b34a601d..5a8e392d7cd2a97e8c1dff25c548440cd60ad099 100644
--- a/Source/core/dom/NameNodeList.h
+++ b/Source/core/dom/NameNodeList.h
@@ -38,12 +38,12 @@ public:
         return adoptRefWillBeNoop(new NameNodeList(rootNode, name));
     }
 
-    virtual ~NameNodeList();
+    ~NameNodeList() override;
 
 private:
     NameNodeList(ContainerNode& rootNode, const AtomicString& name);
 
-    virtual bool elementMatches(const Element&) const override;
+    bool elementMatches(const Element&) const override;
 
     AtomicString m_name;
 };