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

Source/platform/graphics/filters/FELighting.h

Index: Source/platform/graphics/filters/FELighting.h
diff --git a/Source/platform/graphics/filters/FELighting.h b/Source/platform/graphics/filters/FELighting.h
index e21e2601ada456d55b69f1ee5cbb7918868716eb..b5ba280c329067c1fff476bfcd563c45914bb065 100644
--- a/Source/platform/graphics/filters/FELighting.h
+++ b/Source/platform/graphics/filters/FELighting.h
@@ -39,7 +39,7 @@ class LightSource;
 
 class PLATFORM_EXPORT FELighting : public FilterEffect {
 public:
-    virtual PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*) override;
+    PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*) override;
 
 protected:
     enum LightingType {
@@ -47,8 +47,8 @@ protected:
         SpecularLighting
     };
 
-    virtual FloatRect mapPaintRect(const FloatRect&, bool forward = true) override final;
-    virtual bool affectsTransparentPixels() override { return true; }
+    FloatRect mapPaintRect(const FloatRect&, bool forward = true) final;
+    bool affectsTransparentPixels() override { return true; }
 
     FELighting(Filter*, LightingType, const Color&, float, float, float, float, float, float, PassRefPtr<LightSource>);