Replace various ScrollableArea scroll methods with setScrollPosition

Source/core/layout/LayoutBox.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 855 matching lines @@
                 scrollableBox->scrollByRecursively(remainingScrollOffset, clamp);
 
             LocalFrame* frame = this->frame();
             if (frame && frame->page())
                 frame->page()->autoscrollController().updateAutoscrollLayoutObject();
         }
     } else if (view()->frameView()) {
         // If we are here, we were called on a layoutObject that can be programmatically scrolled, but doesn't
         // have an overflow clip. Which means that it is a document node that can be scrolled.
         // FIXME: Pass in DoubleSize. crbug.com/414283.
-        view()->frameView()->scrollBy(flooredIntSize(delta));
+        view()->frameView()->scrollBy(flooredIntSize(delta), UserScroll);
 
         // 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 LayoutBox::needsPreferredWidthsRecalculation() const
 {
     return style()->paddingStart().hasPercent() || style()->paddingEnd().hasPercent();
 }
@@ skipping 3906 matching lines @@
 bool LayoutBox::canRenderBorderImage() const
 {
     if (!style()->hasBorderDecoration())
         return false;
 
     StyleImage* borderImage = style()->borderImage().image();
     return borderImage && borderImage->canRender(*this, style()->effectiveZoom()) && borderImage->isLoaded();
 }
 
 } // namespace blink