blink: Cleanup class forward declarations

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 23 matching lines @@
 #include "platform/scroll/ScrollbarThemeClient.h"
 #include "wtf/MathExtras.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 DisplayItemClient {
  public:
   static Scrollbar* create(ScrollableArea* scrollableArea,
                            ScrollbarOrientation orientation,
                            ScrollbarControlSize size,
@@ skipping 201 matching lines @@
 
 DEFINE_TYPE_CASTS(Scrollbar,
                   Widget,
                   widget,
                   widget->isScrollbar(),
                   widget.isScrollbar());
 
 }  // namespace blink
 
 #endif  // Scrollbar_h