Fix virtual/override/final usage in Source/core/layout/.

Source/core/layout/svg/LayoutSVGResourceFilterPrimitive.h

 /*
  * Copyright (C) 2010 University of Szeged
  * Copyright (C) 2010 Zoltan Herczeg
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 20 matching lines @@
 
 namespace blink {
 
 class LayoutSVGResourceFilterPrimitive final : public LayoutSVGHiddenContainer {
 public:
     explicit LayoutSVGResourceFilterPrimitive(SVGElement* filterPrimitiveElement)
         : LayoutSVGHiddenContainer(filterPrimitiveElement)
     {
     }
 
-    virtual bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override { return false; }
+    bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override { return false; }
 
-    virtual void styleDidChange(StyleDifference, const ComputedStyle*) override;
+    void styleDidChange(StyleDifference, const ComputedStyle*) override;
 
-    virtual const char* name() const override { return "LayoutSVGResourceFilterPrimitive"; }
-    virtual bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectSVGResourceFilterPrimitive || LayoutSVGHiddenContainer::isOfType(type); }
+    const char* name() const override { return "LayoutSVGResourceFilterPrimitive"; }
+    bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectSVGResourceFilterPrimitive || LayoutSVGHiddenContainer::isOfType(type); }
 
     inline void primitiveAttributeChanged(const QualifiedName& attribute)
     {
         LayoutObject* filter = parent();
         if (!filter || !filter->isSVGResourceFilter())
             return;
         toLayoutSVGResourceFilter(filter)->primitiveAttributeChanged(this, attribute);
     }
 };
 
 } // namespace blink
 
 #endif // LayoutSVGResourceFilterPrimitive_h