Scale scrollbar in use-zoom-for-dsf mode

third_party/WebKit/Source/platform/scroll/Scrollbar.h

 /*
  * Copyright (C) 2004, 2006 Apple Computer, Inc.  All rights reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 20 matching lines @@
 #include "platform/graphics/paint/DisplayItem.h"
 #include "platform/heap/Handle.h"
 #include "platform/scroll/ScrollTypes.h"
 #include "platform/scroll/ScrollbarThemeClient.h"
 #include "wtf/MathExtras.h"
 #include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 class GraphicsContext;
+class HostWindow;
 class IntRect;
 class PlatformGestureEvent;
 class PlatformMouseEvent;
 class ScrollAnimatorBase;
 class ScrollableArea;
 class ScrollbarTheme;
 
 class PLATFORM_EXPORT Scrollbar : public Widget, public ScrollbarThemeClient {
 public:
-    static PassRefPtrWillBeRawPtr<Scrollbar> create(ScrollableArea*, ScrollbarOrientation, ScrollbarControlSize);
+    static PassRefPtrWillBeRawPtr<Scrollbar> create(ScrollableArea*, ScrollbarOrientation, ScrollbarControlSize, HostWindow*);
 
     // Theme object ownership remains with the caller and it must outlive the scrollbar.
     static PassRefPtrWillBeRawPtr<Scrollbar> createForTesting(ScrollableArea*, ScrollbarOrientation, ScrollbarControlSize, ScrollbarTheme*);
 
     ~Scrollbar() override;
 
     // ScrollbarThemeClient implementation.
     int x() const override { return Widget::x(); }
     int y() const override { return Widget::y(); }
     int width() const override { return Widget::width(); }
@@ skipping 96 matching lines @@
     void setNeedsPaintInvalidation();
 
     // Promptly unregister from the theme manager + run finalizers of derived Scrollbars.
     EAGERLY_FINALIZE();
 #if ENABLE(OILPAN)
     DECLARE_EAGER_FINALIZATION_OPERATOR_NEW();
 #endif
     DECLARE_VIRTUAL_TRACE();
 
 protected:
-    Scrollbar(ScrollableArea*, ScrollbarOrientation, ScrollbarControlSize, ScrollbarTheme* = 0);
+    Scrollbar(ScrollableArea*, ScrollbarOrientation, ScrollbarControlSize, HostWindow* = 0, ScrollbarTheme* = 0);
 
     void updateThumb();
 
     void autoscrollTimerFired(Timer<Scrollbar>*);
     void startTimerIfNeeded(double delay);
     void stopTimerIfNeeded();
     void autoscrollPressedPart(double delay);
     ScrollDirectionPhysical pressedPartScrollDirectionPhysical();
     ScrollGranularity pressedPartScrollGranularity();
 
@@ skipping 34 matching lines @@
 
     bool m_trackNeedsRepaint;
     bool m_thumbNeedsRepaint;
 };
 
 DEFINE_TYPE_CASTS(Scrollbar, Widget, widget, widget->isScrollbar(), widget.isScrollbar());
 
 } // namespace blink
 
 #endif // Scrollbar_h