A div can be pan-scrolled beyond its overflow (Windows only)

Source/core/rendering/RenderLayer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 2136 matching lines @@
         restrictedByLineClamp = !renderer()->parent()->style()->lineClamp().isNone();
 
     if (renderer()->hasOverflowClip() && !restrictedByLineClamp) {
         IntSize newScrollOffset = adjustedScrollOffset() + delta;
         scrollToOffset(newScrollOffset, clamp);
 
         // If this layer can't do the scroll we ask the next layer up that can scroll to try
         IntSize remainingScrollOffset = newScrollOffset - adjustedScrollOffset();
         if (!remainingScrollOffset.isZero() && renderer()->parent()) {
             if (RenderLayer* scrollableLayer = enclosingScrollableLayer())
-                scrollableLayer->scrollByRecursively(remainingScrollOffset);
+                scrollableLayer->scrollByRecursively(remainingScrollOffset, clamp);
 
             Frame* frame = renderer()->frame();
             if (frame)
                 frame->eventHandler()->updateAutoscrollRenderer();
         }
     } else if (renderer()->view()->frameView()) {
         // If we are here, we were called on a renderer that can be programmatically scrolled, but doesn't
         // have an overflow clip. Which means that it is a document node that can be scrolled.
         renderer()->view()->frameView()->scrollBy(delta);
 
@@ skipping 4276 matching lines @@
     }
 }
 
 void showLayerTree(const WebCore::RenderObject* renderer)
 {
     if (!renderer)
         return;
     showLayerTree(renderer->enclosingLayer());
 }
 #endif