Update HTML classes to use OVERRIDE / FINAL when needed

Source/core/html/HTMLElement.h

Index: Source/core/html/HTMLElement.h
diff --git a/Source/core/html/HTMLElement.h b/Source/core/html/HTMLElement.h
index ef4736aa9bc12a4ee2916a9702d47ae02f624e18..9631f8093dd7c5b891bf5ff0921f46e3ee18aaf3 100644
--- a/Source/core/html/HTMLElement.h
+++ b/Source/core/html/HTMLElement.h
@@ -44,7 +44,7 @@ public:
 
     virtual String title() const OVERRIDE FINAL;
 
-    virtual short tabIndex() const;
+    virtual short tabIndex() const OVERRIDE;
     void setTabIndex(int);
 
     void setInnerText(const String&, ExceptionState&);
@@ -54,7 +54,7 @@ public:
     void insertAdjacentText(const String& where, const String& text, ExceptionState&);
 
     virtual bool hasCustomFocusLogic() const;
-    virtual bool supportsFocus() const;
+    virtual bool supportsFocus() const OVERRIDE;
 
     String contentEditable() const;
     void setContentEditable(const String&, ExceptionState&);
@@ -70,12 +70,12 @@ public:
 
     void click();
 
-    virtual void accessKeyAction(bool sendMouseEvents);
+    virtual void accessKeyAction(bool sendMouseEvents) OVERRIDE;
 
     bool ieForbidsInsertHTML() const;
 
-    virtual bool rendererIsNeeded(const RenderStyle&);
-    virtual RenderObject* createRenderer(RenderStyle*);
+    virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE;
+    virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
 
     virtual HTMLFormElement* formOwner() const { return 0; }
 
@@ -105,7 +105,7 @@ protected:
     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
     unsigned parseBorderWidthAttribute(const AtomicString&) const;
 
-    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
+    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0) OVERRIDE;
     void calculateAndAdjustDirectionality();
 
 private: