Replace FINAL and OVERRIDE with their C++11 counterparts in Source/core/html

Source/core/html/HTMLAudioElement.h

Index: Source/core/html/HTMLAudioElement.h
diff --git a/Source/core/html/HTMLAudioElement.h b/Source/core/html/HTMLAudioElement.h
index 1c8e1f77fe1c7db071dec83f6e2350a408f308d1..ea013ad5b05b7b8365889717ad0e8ccd653d59b3 100644
--- a/Source/core/html/HTMLAudioElement.h
+++ b/Source/core/html/HTMLAudioElement.h
@@ -33,13 +33,13 @@ namespace blink {
 
 class Document;
 
-class HTMLAudioElement FINAL : public HTMLMediaElement {
+class HTMLAudioElement final : public HTMLMediaElement {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<HTMLAudioElement> create(Document&);
     static PassRefPtrWillBeRawPtr<HTMLAudioElement> createForJSConstructor(Document&, const AtomicString& src);
 
-    virtual bool isHTMLAudioElement() const OVERRIDE { return true; }
+    virtual bool isHTMLAudioElement() const override { return true; }
 
 private:
     HTMLAudioElement(Document&);