Remove some more frame-level scrolling machinery.

sky/engine/core/rendering/RenderBox.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, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. 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 650 matching lines @@
         // If this layer can't do the scroll we ask the next layer up that can scroll to try
         IntSize remainingScrollOffset = newScrollOffset - layer()->scrollableArea()->adjustedScrollOffset();
         if (!remainingScrollOffset.isZero() && parent()) {
             if (RenderBox* scrollableBox = enclosingScrollableBox())
                 scrollableBox->scrollByRecursively(remainingScrollOffset, clamp);
 
             LocalFrame* frame = this->frame();
             if (frame && frame->page())
                 frame->page()->autoscrollController().updateAutoscrollRenderer();
         }
-    } else if (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.
-        view()->frameView()->scrollBy(delta);
-
-        // FIXME: If we didn't scroll the whole way, do we want to try looking at the frames ownerElement?
-        // https://bugs.webkit.org/show_bug.cgi?id=28237
     }
 }
 
 bool RenderBox::needsPreferredWidthsRecalculation() const
 {
     return style()->paddingStart().isPercent() || style()->paddingEnd().isPercent();
 }
 
 IntSize RenderBox::scrolledContentOffset() const
 {
@@ skipping 3534 matching lines @@
 
 RenderBox::BoxDecorationData::BoxDecorationData(const RenderStyle& style)
 {
     backgroundColor = style.visitedDependentColor(CSSPropertyBackgroundColor);
     hasBackground = backgroundColor.alpha() || style.hasBackgroundImage();
     ASSERT(hasBackground == style.hasBackground());
     hasBorder = style.hasBorder();
 }
 
 } // namespace blink