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

Source/core/layout/LayoutScrollbarTheme.h

Index: Source/core/layout/LayoutScrollbarTheme.h
diff --git a/Source/core/layout/LayoutScrollbarTheme.h b/Source/core/layout/LayoutScrollbarTheme.h
index 7b33d33d07f4ac1ef6481c1ffa9e2561510b6125..9cf6f91d4b9cf5b934a60db1f3fe73a209a114df 100644
--- a/Source/core/layout/LayoutScrollbarTheme.h
+++ b/Source/core/layout/LayoutScrollbarTheme.h
@@ -34,45 +34,45 @@ class PlatformMouseEvent;
 
 class LayoutScrollbarTheme final : public ScrollbarTheme {
 public:
-    virtual ~LayoutScrollbarTheme() { }
+    ~LayoutScrollbarTheme() override { }
 
-    virtual int scrollbarThickness(ScrollbarControlSize controlSize) override { return ScrollbarTheme::theme()->scrollbarThickness(controlSize); }
+    int scrollbarThickness(ScrollbarControlSize controlSize) override { return ScrollbarTheme::theme()->scrollbarThickness(controlSize); }
 
-    virtual ScrollbarButtonsPlacement buttonsPlacement() const override { return ScrollbarTheme::theme()->buttonsPlacement(); }
+    ScrollbarButtonsPlacement buttonsPlacement() const override { return ScrollbarTheme::theme()->buttonsPlacement(); }
 
-    virtual void paintScrollCorner(GraphicsContext*, const DisplayItemClientWrapper&, const IntRect& cornerRect) override;
+    void paintScrollCorner(GraphicsContext*, const DisplayItemClientWrapper&, const IntRect& cornerRect) override;
 
-    virtual bool shouldCenterOnThumb(ScrollbarThemeClient* scrollbar, const PlatformMouseEvent& event) override { return ScrollbarTheme::theme()->shouldCenterOnThumb(scrollbar, event); }
-    virtual bool shouldSnapBackToDragOrigin(ScrollbarThemeClient* scrollbar, const PlatformMouseEvent& event) override { return ScrollbarTheme::theme()->shouldSnapBackToDragOrigin(scrollbar, event); }
+    bool shouldCenterOnThumb(ScrollbarThemeClient* scrollbar, const PlatformMouseEvent& event) override { return ScrollbarTheme::theme()->shouldCenterOnThumb(scrollbar, event); }
+    bool shouldSnapBackToDragOrigin(ScrollbarThemeClient* scrollbar, const PlatformMouseEvent& event) override { return ScrollbarTheme::theme()->shouldSnapBackToDragOrigin(scrollbar, event); }
 
-    virtual double initialAutoscrollTimerDelay() override { return ScrollbarTheme::theme()->initialAutoscrollTimerDelay(); }
-    virtual double autoscrollTimerDelay() override { return ScrollbarTheme::theme()->autoscrollTimerDelay(); }
+    double initialAutoscrollTimerDelay() override { return ScrollbarTheme::theme()->initialAutoscrollTimerDelay(); }
+    double autoscrollTimerDelay() override { return ScrollbarTheme::theme()->autoscrollTimerDelay(); }
 
-    virtual void registerScrollbar(ScrollbarThemeClient* scrollbar) override { return ScrollbarTheme::theme()->registerScrollbar(scrollbar); }
-    virtual void unregisterScrollbar(ScrollbarThemeClient* scrollbar) override { return ScrollbarTheme::theme()->unregisterScrollbar(scrollbar); }
+    void registerScrollbar(ScrollbarThemeClient* scrollbar) override { return ScrollbarTheme::theme()->registerScrollbar(scrollbar); }
+    void unregisterScrollbar(ScrollbarThemeClient* scrollbar) override { return ScrollbarTheme::theme()->unregisterScrollbar(scrollbar); }
 
-    virtual int minimumThumbLength(ScrollbarThemeClient*) override;
+    int minimumThumbLength(ScrollbarThemeClient*) override;
 
     void buttonSizesAlongTrackAxis(ScrollbarThemeClient*, int& beforeSize, int& afterSize);
 
     static LayoutScrollbarTheme* layoutScrollbarTheme();
 
 protected:
-    virtual bool hasButtons(ScrollbarThemeClient*) override;
-    virtual bool hasThumb(ScrollbarThemeClient*) override;
+    bool hasButtons(ScrollbarThemeClient*) override;
+    bool hasThumb(ScrollbarThemeClient*) override;
 
-    virtual IntRect backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) override;
-    virtual IntRect forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) override;
-    virtual IntRect trackRect(ScrollbarThemeClient*, bool painting = false) override;
+    IntRect backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) override;
+    IntRect forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) override;
+    IntRect trackRect(ScrollbarThemeClient*, bool painting = false) override;
 
-    virtual void paintScrollbarBackground(GraphicsContext*, ScrollbarThemeClient*) override;
-    virtual void paintTrackBackground(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) override;
-    virtual void paintTrackPiece(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart) override;
-    virtual void paintButton(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart) override;
-    virtual void paintThumb(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) override;
-    virtual void paintTickmarks(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) override;
+    void paintScrollbarBackground(GraphicsContext*, ScrollbarThemeClient*) override;
+    void paintTrackBackground(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) override;
+    void paintTrackPiece(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart) override;
+    void paintButton(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart) override;
+    void paintThumb(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) override;
+    void paintTickmarks(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) override;
 
-    virtual IntRect constrainTrackRectToTrackPieces(ScrollbarThemeClient*, const IntRect&) override;
+    IntRect constrainTrackRectToTrackPieces(ScrollbarThemeClient*, const IntRect&) override;
 };
 
 } // namespace blink