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

Source/core/layout/LayoutFieldset.h

Index: Source/core/layout/LayoutFieldset.h
diff --git a/Source/core/layout/LayoutFieldset.h b/Source/core/layout/LayoutFieldset.h
index 45fa0a57a4f2bfe3a657831db75f361f1dded870..d0642b8b708eb2d1ee75c8bd681d3134ef980feb 100644
--- a/Source/core/layout/LayoutFieldset.h
+++ b/Source/core/layout/LayoutFieldset.h
@@ -34,18 +34,18 @@ public:
 
     LayoutBox* findInFlowLegend() const;
 
-    virtual const char* name() const override { return "LayoutFieldset"; }
+    const char* name() const override { return "LayoutFieldset"; }
 
 private:
-    virtual bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectFieldset || LayoutBlockFlow::isOfType(type); }
+    bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectFieldset || LayoutBlockFlow::isOfType(type); }
 
-    virtual LayoutObject* layoutSpecialExcludedChild(bool relayoutChildren, SubtreeLayoutScope&) override;
+    LayoutObject* layoutSpecialExcludedChild(bool relayoutChildren, SubtreeLayoutScope&) override;
 
-    virtual void computePreferredLogicalWidths() override;
-    virtual bool avoidsFloats() const override { return true; }
+    void computePreferredLogicalWidths() override;
+    bool avoidsFloats() const override { return true; }
 
-    virtual void paintBoxDecorationBackground(const PaintInfo&, const LayoutPoint&) override;
-    virtual void paintMask(const PaintInfo&, const LayoutPoint&) override;
+    void paintBoxDecorationBackground(const PaintInfo&, const LayoutPoint&) override;
+    void paintMask(const PaintInfo&, const LayoutPoint&) override;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutFieldset, isFieldset());