Update rendering classes to use OVERRIDE / FINAL when needed

Source/core/rendering/EllipsisBox.h

Index: Source/core/rendering/EllipsisBox.h
diff --git a/Source/core/rendering/EllipsisBox.h b/Source/core/rendering/EllipsisBox.h
index ad8e61291f5e6c5a6ef39411b695e3fbf0283342..149a8512e641060f9c2f2642e65c529121a38eba 100644
--- a/Source/core/rendering/EllipsisBox.h
+++ b/Source/core/rendering/EllipsisBox.h
@@ -40,7 +40,7 @@ public:
         setHasVirtualLogicalHeight();
     }
 
-    virtual void paint(PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom);
+    virtual void paint(PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom) OVERRIDE;
     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom) OVERRIDE;
     void setSelectionState(RenderObject::SelectionState s) { m_selectionState = s; }
     IntRect selectionRect();
@@ -48,8 +48,8 @@ public:
     virtual float virtualLogicalHeight() const OVERRIDE { return m_height; }
 private:
     void paintMarkupBox(PaintInfo&, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom, RenderStyle*);
-    virtual int height() const { return m_height; }
-    virtual RenderObject::SelectionState selectionState() { return m_selectionState; }
+    int height() const { return m_height; }
+    virtual RenderObject::SelectionState selectionState() OVERRIDE { return m_selectionState; }
     void paintSelection(GraphicsContext*, const FloatPoint&, RenderStyle*, const Font&);
     InlineBox* markupBox() const;