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

Source/core/layout/LayoutMeter.h

Index: Source/core/layout/LayoutMeter.h
diff --git a/Source/core/layout/LayoutMeter.h b/Source/core/layout/LayoutMeter.h
index 61ed8a0c962147655f5e4c574e05cdfdcb7f9ffa..6f1502c08a01566efb7321e9513c98222c63a67f 100644
--- a/Source/core/layout/LayoutMeter.h
+++ b/Source/core/layout/LayoutMeter.h
@@ -30,18 +30,18 @@ class HTMLMeterElement;
 class LayoutMeter final : public LayoutBlockFlow {
 public:
     explicit LayoutMeter(HTMLElement*);
-    virtual ~LayoutMeter();
+    ~LayoutMeter() override;
 
     HTMLMeterElement* meterElement() const;
-    virtual void updateFromElement() override;
+    void updateFromElement() override;
 
-    virtual const char* name() const override { return "LayoutMeter"; }
+    const char* name() const override { return "LayoutMeter"; }
 
 private:
-    virtual void updateLogicalWidth() override;
-    virtual void computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues&) const override;
+    void updateLogicalWidth() override;
+    void computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues&) const override;
 
-    virtual bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectMeter || LayoutBlockFlow::isOfType(type); }
+    bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectMeter || LayoutBlockFlow::isOfType(type); }
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutMeter, isMeter());