Remove Scrollbar dependency on AXObjectCache

Source/core/platform/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 214 matching lines @@
 
     virtual IntPoint convertSelfToChild(const Widget* child, const IntPoint& point) const
     {
         IntPoint newPoint = point;
         if (!isScrollViewScrollbar(child))
             newPoint = point + scrollOffset();
         newPoint.moveBy(-child->location());
         return newPoint;
     }
 
-    // A means to access the AX cache when this object can get a pointer to it.
-    virtual AXObjectCache* axObjectCache() const { return 0; }
-
     // Widget override. Handles painting of the contents of the view as well as the scrollbars.
     virtual void paint(GraphicsContext*, const IntRect&);
     void paintScrollbars(GraphicsContext*, const IntRect&);
 
     // Widget overrides to ensure that our children's visibility status is kept up to date when we get shown and hidden.
     virtual void show();
     virtual void hide();
     virtual void setParentVisible(bool);
 
     // Pan scrolling.
@@ skipping 107 matching lines @@
     ASSERT(!widget || widget->isScrollView());
     return static_cast<const ScrollView*>(widget);
 }
 
 // This will catch anyone doing an unnecessary cast.
 void toScrollView(const ScrollView*);
 
 } // namespace WebCore
 
 #endif // ScrollView_h