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

Source/platform/graphics/filters/FEComponentTransfer.h

Index: Source/platform/graphics/filters/FEComponentTransfer.h
diff --git a/Source/platform/graphics/filters/FEComponentTransfer.h b/Source/platform/graphics/filters/FEComponentTransfer.h
index 85292fb61e726a9624abd7efed1712ead0b35d4b..64d7d8292a4240c00d968c66f30e018f4c2da108 100644
--- a/Source/platform/graphics/filters/FEComponentTransfer.h
+++ b/Source/platform/graphics/filters/FEComponentTransfer.h
@@ -64,15 +64,15 @@ public:
     static PassRefPtrWillBeRawPtr<FEComponentTransfer> create(Filter*, const ComponentTransferFunction& redFunc, const ComponentTransferFunction& greenFunc,
         const ComponentTransferFunction& blueFunc, const ComponentTransferFunction& alphaFunc);
 
-    virtual PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*) override;
+    PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*) override;
 
-    virtual TextStream& externalRepresentation(TextStream&, int indention) const override;
+    TextStream& externalRepresentation(TextStream&, int indention) const override;
 
 private:
     FEComponentTransfer(Filter*, const ComponentTransferFunction& redFunc, const ComponentTransferFunction& greenFunc,
         const ComponentTransferFunction& blueFunc, const ComponentTransferFunction& alphaFunc);
 
-    virtual bool affectsTransparentPixels() override;
+    bool affectsTransparentPixels() override;
 
     void getValues(unsigned char rValues[256], unsigned char gValues[256], unsigned char bValues[256], unsigned char aValues[256]);