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

Source/core/layout/LayoutFrame.h

Index: Source/core/layout/LayoutFrame.h
diff --git a/Source/core/layout/LayoutFrame.h b/Source/core/layout/LayoutFrame.h
index 13e9bce78b12b1d5da38ebc37058054692495dd4..8753c6c957f86481100e4889593443c084dcbde7 100644
--- a/Source/core/layout/LayoutFrame.h
+++ b/Source/core/layout/LayoutFrame.h
@@ -36,12 +36,12 @@ public:
 
     FrameEdgeInfo edgeInfo() const;
 
-    virtual const char* name() const override { return "LayoutFrame"; }
+    const char* name() const override { return "LayoutFrame"; }
 
 private:
-    virtual bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectFrame || LayoutPart::isOfType(type); }
+    bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectFrame || LayoutPart::isOfType(type); }
 
-    virtual void updateFromElement() override;
+    void updateFromElement() override;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutFrame, isFrame());