Update more platform classes to use OVERRIDE / FINAL when needed

Source/platform/scroll/ScrollView.h

 /*
  * Copyright (C) 2004, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Holger Hans Peter Freyther
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 25 matching lines @@
 
 #include "wtf/HashSet.h"
 
 namespace WebCore {
 
 class HostWindow;
 class Scrollbar;
 
 class PLATFORM_EXPORT ScrollView : public Widget, public ScrollableArea {
 public:
-    ~ScrollView();
+    virtual ~ScrollView();
 
     // ScrollableArea functions.
     virtual int scrollSize(ScrollbarOrientation) const OVERRIDE;
     virtual void setScrollOffset(const IntPoint&) OVERRIDE;
     virtual bool isScrollCornerVisible() const OVERRIDE;
     virtual void scrollbarStyleChanged(int newStyle, bool forceUpdate) OVERRIDE;
     virtual bool userInputScrollable(ScrollbarOrientation) const OVERRIDE;
     virtual bool shouldPlaceVerticalScrollbarOnLeft() const OVERRIDE;
 
     virtual void notifyPageThatContentAreaWillPaint() const;
@@ skipping 139 matching lines @@
     // These functions are used to enable scrollbars to avoid window resizer controls that overlap the scroll view. This happens on Mac
     // for example.
     virtual IntRect windowResizerRect() const { return IntRect(); }
     bool containsScrollbarsAvoidingResizer() const;
     void adjustScrollbarsAvoidingResizerCount(int overlapDelta);
     void windowResizerRectChanged();
 
     virtual void setParent(Widget*) OVERRIDE; // Overridden to update the overlapping scrollbar count.
 
     // Called when our frame rect changes (or the rect/scroll position of an ancestor changes).
-    virtual void frameRectsChanged();
+    virtual void frameRectsChanged() OVERRIDE;
 
     // Widget override to update our scrollbars and notify our contents of the resize.
-    virtual void setFrameRect(const IntRect&);
+    virtual void setFrameRect(const IntRect&) OVERRIDE;
 
     // Widget override to notify our contents of a cliprect change.
     virtual void clipRectChanged() OVERRIDE;
 
     // For platforms that need to hit test scrollbars from within the engine's event handlers (like Win32).
     Scrollbar* scrollbarAtPoint(const IntPoint& windowPoint);
 
     virtual IntPoint convertChildToSelf(const Widget* child, const IntPoint& point) const OVERRIDE
     {
         IntPoint newPoint = point;
@@ skipping 22 matching lines @@
     virtual void setParentVisible(bool) OVERRIDE;
 
     // Pan scrolling.
     static const int noPanScrollRadius = 15;
     void addPanScrollIcon(const IntPoint&);
     void removePanScrollIcon();
     void paintPanScrollIcon(GraphicsContext*);
 
     virtual bool isPointInScrollbarCorner(const IntPoint&);
     virtual bool scrollbarCornerPresent() const;
-    virtual IntRect scrollCornerRect() const;
+    virtual IntRect scrollCornerRect() const OVERRIDE;
     virtual void paintScrollCorner(GraphicsContext*, const IntRect& cornerRect);
     virtual void paintScrollbar(GraphicsContext*, Scrollbar*, const IntRect&);
 
     virtual IntRect convertFromScrollbarToContainingView(const Scrollbar*, const IntRect&) const OVERRIDE;
     virtual IntRect convertFromContainingViewToScrollbar(const Scrollbar*, const IntRect&) const OVERRIDE;
     virtual IntPoint convertFromScrollbarToContainingView(const Scrollbar*, const IntPoint&) const OVERRIDE;
     virtual IntPoint convertFromContainingViewToScrollbar(const Scrollbar*, const IntPoint&) const OVERRIDE;
 
     void calculateAndPaintOverhangAreas(GraphicsContext*, const IntRect& dirtyRect);
     void calculateAndPaintOverhangBackground(GraphicsContext*, const IntRect& dirtyRect);
@@ skipping 68 matching lines @@
 
     IntRect rectToCopyOnScroll() const;
 
     // Called when the scroll position within this view changes.  FrameView overrides this to generate repaint invalidations.
     virtual void repaintFixedElementsAfterScrolling() { }
     virtual void updateFixedElementsAfterScrolling() { }
 
     void calculateOverhangAreasForPainting(IntRect& horizontalOverhangRect, IntRect& verticalOverhangRect);
     void updateOverhangAreas();
 
-    int pageStep(ScrollbarOrientation) const;
+    virtual int pageStep(ScrollbarOrientation) const OVERRIDE;
 }; // class ScrollView
 
 DEFINE_TYPE_CASTS(ScrollView, Widget, widget, widget->isScrollView(), widget.isScrollView());
 
 } // namespace WebCore
 
 #endif // ScrollView_h