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

Source/core/html/HTMLMarqueeElement.h

Index: Source/core/html/HTMLMarqueeElement.h
diff --git a/Source/core/html/HTMLMarqueeElement.h b/Source/core/html/HTMLMarqueeElement.h
index 6d31cd1e5ebd7d9e8d3ee972a15eeb08a99b5b4e..0cc2280ee76eb37127c6e4ac843bdfbe08535da9 100644
--- a/Source/core/html/HTMLMarqueeElement.h
+++ b/Source/core/html/HTMLMarqueeElement.h
@@ -32,9 +32,9 @@ class HTMLMarqueeElement final : public HTMLElement {
 public:
     static PassRefPtrWillBeRawPtr<HTMLMarqueeElement> create(Document&);
 
-    virtual void attributeWillChange(const QualifiedName&, const AtomicString& oldValue, const AtomicString& newValue) final;
-    virtual InsertionNotificationRequest insertedInto(ContainerNode*) final;
-    virtual void removedFrom(ContainerNode*) final;
+    void attributeWillChange(const QualifiedName&, const AtomicString& oldValue, const AtomicString& newValue) final;
+    InsertionNotificationRequest insertedInto(ContainerNode*) final;
+    void removedFrom(ContainerNode*) final;
 
     bool isHorizontal() const;