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

Source/core/layout/svg/LayoutSVGTSpan.h

Index: Source/core/layout/svg/LayoutSVGTSpan.h
diff --git a/Source/core/layout/svg/LayoutSVGTSpan.h b/Source/core/layout/svg/LayoutSVGTSpan.h
index 2e4f87810af78990a1209d6027eadcc788cb610b..8be0ebcf851aeedf98d45a058f7846502af4e91e 100644
--- a/Source/core/layout/svg/LayoutSVGTSpan.h
+++ b/Source/core/layout/svg/LayoutSVGTSpan.h
@@ -29,9 +29,9 @@ class LayoutSVGTSpan final : public LayoutSVGInline {
 public:
     explicit LayoutSVGTSpan(Element*);
 
-    virtual bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
+    bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
 
-    virtual const char* name() const override { return "LayoutSVGTSpan"; }
+    const char* name() const override { return "LayoutSVGTSpan"; }
 };
 }