Clean-up hit-testing of scrollbars

Source/platform/scroll/ScrollView.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple 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 664 matching lines @@
         if (m_horizontalScrollbar)
             m_horizontalScrollbar->invalidate();
         if (m_verticalScrollbar)
             m_verticalScrollbar->invalidate();
 
         // Invalidate the scroll corner too on unsuppress.
         invalidateRect(scrollCornerRect());
     }
 }
 
-Scrollbar* ScrollView::scrollbarAtPoint(const IntPoint& windowPoint)
+Scrollbar* ScrollView::scrollbarAtWindowPoint(const IntPoint& windowPoint)
 {
     IntPoint viewPoint = convertFromContainingWindow(windowPoint);
+    return scrollbarAtViewPoint(viewPoint);
+}
+
+Scrollbar* ScrollView::scrollbarAtViewPoint(const IntPoint& viewPoint)
+{
     if (m_horizontalScrollbar && m_horizontalScrollbar->shouldParticipateInHitTesting() && m_horizontalScrollbar->frameRect().contains(viewPoint))
         return m_horizontalScrollbar.get();
     if (m_verticalScrollbar && m_verticalScrollbar->shouldParticipateInHitTesting() && m_verticalScrollbar->frameRect().contains(viewPoint))
         return m_verticalScrollbar.get();
     return 0;
 }
 
 void ScrollView::setFrameRect(const IntRect& newRect)
 {
     IntRect oldRect = frameRect();
@@ skipping 414 matching lines @@
         return;
 
     ScrollableArea::setScrollOrigin(origin);
 
     // Update if the scroll origin changes, since our position will be different if the content size did not change.
     if (updatePositionAtAll && updatePositionSynchronously)
         updateScrollbars(scrollOffset());
 }
 
 } // namespace blink