Fix virtual/override/final usage in Source/platform/.

Source/platform/graphics/filters/FESpecularLighting.h

Index: Source/platform/graphics/filters/FESpecularLighting.h
diff --git a/Source/platform/graphics/filters/FESpecularLighting.h b/Source/platform/graphics/filters/FESpecularLighting.h
index 23735551ff80a860bb9effb485dfa6a412ff70f7..b051de64e474f00556c05f6c853e79ebf01ba487 100644
--- a/Source/platform/graphics/filters/FESpecularLighting.h
+++ b/Source/platform/graphics/filters/FESpecularLighting.h
@@ -31,7 +31,7 @@ class PLATFORM_EXPORT FESpecularLighting : public FELighting {
 public:
     static PassRefPtrWillBeRawPtr<FESpecularLighting> create(Filter*, const Color&, float, float,
         float, float, float, PassRefPtr<LightSource>);
-    virtual ~FESpecularLighting();
+    ~FESpecularLighting() override;
 
     Color lightingColor() const;
     bool setLightingColor(const Color&);
@@ -54,7 +54,7 @@ public:
     const LightSource* lightSource() const;
     void setLightSource(PassRefPtr<LightSource>);
 
-    virtual TextStream& externalRepresentation(TextStream&, int indention) const override;
+    TextStream& externalRepresentation(TextStream&, int indention) const override;
 
 private:
     FESpecularLighting(Filter*, const Color&, float, float, float, float, float, PassRefPtr<LightSource>);