Remove a bunch of frame-level scrolling machinery.

sky/engine/core/rendering/RenderBoxModelObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 865 matching lines @@
             left += marginLeft();
             top += marginTop();
         } else
             positioningAreaSize = pixelSnappedIntSize(paintRect.size() - LayoutSize(left + right, top + bottom), paintRect.location());
     } else {
         geometry.setHasNonLocalGeometry();
 
         IntRect viewportRect = pixelSnappedIntRect(viewRect());
         if (fixedBackgroundPaintsInLocalCoordinates())
             viewportRect.setLocation(IntPoint());
-        else if (FrameView* frameView = view()->frameView())
-            viewportRect.setLocation(IntPoint(frameView->scrollOffsetForFixedPosition()));
 
         if (paintContainer) {
             IntPoint absoluteContainerOffset = roundedIntPoint(paintContainer->localToAbsolute(FloatPoint()));
             viewportRect.moveBy(-absoluteContainerOffset);
         }
 
         geometry.setDestRect(pixelSnappedIntRect(viewportRect));
         positioningAreaSize = geometry.destRect().size();
     }
 
@@ skipping 1742 matching lines @@
     ASSERT(!beforeChild || toBoxModelObject == beforeChild->parent());
     for (RenderObject* child = startChild; child && child != endChild; ) {
         // Save our next sibling as moveChildTo will clear it.
         RenderObject* nextSibling = child->nextSibling();
         moveChildTo(toBoxModelObject, child, beforeChild, fullRemoveInsert);
         child = nextSibling;
     }
 }
 
 } // namespace blink