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

Source/core/layout/LayoutProgress.h

Index: Source/core/layout/LayoutProgress.h
diff --git a/Source/core/layout/LayoutProgress.h b/Source/core/layout/LayoutProgress.h
index fbd1cd1924b1fce9ae535cda553f4051298b999a..c8d8abf48dbc3ff22cb864e72e76a7afcf12740c 100644
--- a/Source/core/layout/LayoutProgress.h
+++ b/Source/core/layout/LayoutProgress.h
@@ -31,23 +31,23 @@ class HTMLProgressElement;
 class CORE_EXPORT LayoutProgress final : public LayoutBlockFlow {
 public:
     explicit LayoutProgress(HTMLElement*);
-    virtual ~LayoutProgress();
+    ~LayoutProgress() override;
 
     double position() const { return m_position; }
     double animationProgress() const;
 
     bool isDeterminate() const;
-    virtual void updateFromElement() override;
+    void updateFromElement() override;
 
     HTMLProgressElement* progressElement() const;
 
-    virtual const char* name() const override { return "LayoutProgress"; }
+    const char* name() const override { return "LayoutProgress"; }
 
 protected:
-    virtual void willBeDestroyed() override;
+    void willBeDestroyed() override;
 
 private:
-    virtual bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectProgress || LayoutBlockFlow::isOfType(type); }
+    bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectProgress || LayoutBlockFlow::isOfType(type); }
 
     void animationTimerFired(Timer<LayoutProgress>*);
     void updateAnimationState();