Update remaining rendering classes to use OVERRIDE / FINAL when needed

Source/core/rendering/svg/SVGTextRunRenderingContext.h

Index: Source/core/rendering/svg/SVGTextRunRenderingContext.h
diff --git a/Source/core/rendering/svg/SVGTextRunRenderingContext.h b/Source/core/rendering/svg/SVGTextRunRenderingContext.h
index e71eca2ca29207dbc143e2bf0857279cdd6d3610..e03f939f4945ff21ce044a047c2d5e22c79eeed5 100644
--- a/Source/core/rendering/svg/SVGTextRunRenderingContext.h
+++ b/Source/core/rendering/svg/SVGTextRunRenderingContext.h
@@ -29,7 +29,7 @@ namespace WebCore {
 class RenderObject;
 class RenderSVGResource;
 
-class SVGTextRunRenderingContext : public TextRun::RenderingContext {
+class SVGTextRunRenderingContext FINAL : public TextRun::RenderingContext {
 public:
     static PassRefPtr<SVGTextRunRenderingContext> create(RenderObject* renderer)
     {
@@ -42,9 +42,9 @@ public:
     RenderSVGResource* activePaintingResource() const { return m_activePaintingResource; }
     void setActivePaintingResource(RenderSVGResource* object) { m_activePaintingResource = object; }
 
-    virtual GlyphData glyphDataForCharacter(const Font&, const TextRun&, WidthIterator&, UChar32 character, bool mirror, int currentCharacter, unsigned& advanceLength);
-    virtual void drawSVGGlyphs(GraphicsContext*, const TextRun&, const SimpleFontData*, const GlyphBuffer&, int from, int to, const FloatPoint&) const;
-    virtual float floatWidthUsingSVGFont(const Font&, const TextRun&, int& charsConsumed, String& glyphName) const;
+    virtual GlyphData glyphDataForCharacter(const Font&, const TextRun&, WidthIterator&, UChar32 character, bool mirror, int currentCharacter, unsigned& advanceLength) OVERRIDE;
+    virtual void drawSVGGlyphs(GraphicsContext*, const TextRun&, const SimpleFontData*, const GlyphBuffer&, int from, int to, const FloatPoint&) const OVERRIDE;
+    virtual float floatWidthUsingSVGFont(const Font&, const TextRun&, int& charsConsumed, String& glyphName) const OVERRIDE;
 #endif
 
 private: