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

Source/core/html/HTMLEmbedElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2006, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 19 matching lines @@
 class HTMLEmbedElement final : public HTMLPlugInElement {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<HTMLEmbedElement> create(Document&, bool createdByParser = false);
 
     bool isExposed() const;
 
 private:
     HTMLEmbedElement(Document&, bool createdByParser);
 
-    virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
-    virtual bool isPresentationAttribute(const QualifiedName&) const override;
-    virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
+    void parseAttribute(const QualifiedName&, const AtomicString&) override;
+    bool isPresentationAttribute(const QualifiedName&) const override;
+    void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
 
-    virtual bool layoutObjectIsNeeded(const ComputedStyle&) override;
+    bool layoutObjectIsNeeded(const ComputedStyle&) override;
 
-    virtual bool isURLAttribute(const Attribute&) const override;
-    virtual const QualifiedName& subResourceAttributeName() const override;
+    bool isURLAttribute(const Attribute&) const override;
+    const QualifiedName& subResourceAttributeName() const override;
 
-    virtual LayoutPart* existingLayoutPart() const override;
+    LayoutPart* existingLayoutPart() const override;
 
-    virtual void updateWidgetInternal() override;
+    void updateWidgetInternal() override;
 
     void parametersForPlugin(Vector<String>& paramNames, Vector<String>& paramValues);
 
-    virtual bool shouldRegisterAsNamedItem() const override { return true; }
-    virtual bool isInteractiveContent() const override;
+    bool shouldRegisterAsNamedItem() const override { return true; }
+    bool isInteractiveContent() const override;
 };
 
 } // namespace blink
 
 #endif // HTMLEmbedElement_h