Move rendering/RenderBox to layout/LayoutBox.

Source/core/layout/LayoutScrollbar.cpp

 /*
  * Copyright (C) 2008, 2009 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 71 matching lines @@
 
 DEFINE_TRACE(LayoutScrollbar)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_owner);
     visitor->trace(m_owningFrame);
 #endif
     Scrollbar::trace(visitor);
 }
 
-RenderBox* LayoutScrollbar::owningRenderer() const
+LayoutBox* LayoutScrollbar::owningRenderer() const
 {
     if (m_owningFrame) {
-        RenderBox* currentRenderer = m_owningFrame->ownerRenderer();
+        LayoutBox* currentRenderer = m_owningFrame->ownerRenderer();
         return currentRenderer;
     }
     return m_owner && m_owner->renderer() ? m_owner->renderer()->enclosingBox() : 0;
 }
 
 void LayoutScrollbar::setParent(Widget* parent)
 {
     Scrollbar::setParent(parent);
     if (!parent) {
-        // Destroy all of the scrollbar's RenderBoxes.
+        // Destroy all of the scrollbar's LayoutBoxes.
         updateScrollbarParts(true);
     }
 }
 
 void LayoutScrollbar::setEnabled(bool e)
 {
     bool wasEnabled = enabled();
     Scrollbar::setEnabled(e);
     if (wasEnabled != e)
         updateScrollbarParts();
@@ skipping 67 matching lines @@
     int oldThickness = isHorizontal ? height() : width();
     int newThickness = 0;
     LayoutScrollbarPart* part = m_parts.get(ScrollbarBGPart);
     if (part) {
         part->layout();
         newThickness = isHorizontal ? part->size().height() : part->size().width();
     }
 
     if (newThickness != oldThickness) {
         setFrameRect(IntRect(location(), IntSize(isHorizontal ? width() : newThickness, isHorizontal ? newThickness : height())));
-        if (RenderBox* box = owningRenderer()) {
+        if (LayoutBox* box = owningRenderer()) {
             if (box->isRenderBlock())
                 toRenderBlock(box)->notifyScrollbarThicknessChanged();
             box->setChildNeedsLayout();
         }
     }
 }
 
 static PseudoId pseudoForScrollbarPart(ScrollbarPart part)
 {
     switch (part) {
@@ skipping 144 matching lines @@
 int LayoutScrollbar::minimumThumbLength()
 {
     LayoutScrollbarPart* partRenderer = m_parts.get(ThumbPart);
     if (!partRenderer)
         return 0;
     partRenderer->layout();
     return orientation() == HorizontalScrollbar ? partRenderer->size().width() : partRenderer->size().height();
 }
 
 }