Remove internal recursion for RenderBlockFlow and RenderMultiColumnBlock layout

Source/core/rendering/LayoutState.cpp

 /*
  * Copyright (C) 2007 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 163 matching lines @@
     partitionFree(ptr);
 }
 
 void LayoutState::clearPaginationInformation()
 {
     m_pageLogicalHeight = m_next->m_pageLogicalHeight;
     m_pageOffset = m_next->m_pageOffset;
     m_columnInfo = m_next->m_columnInfo;
 }
 
-LayoutUnit LayoutState::pageLogicalOffset(RenderBox* child, LayoutUnit childLogicalOffset) const
+LayoutUnit LayoutState::pageLogicalOffset(const RenderBox* child, LayoutUnit childLogicalOffset) const
 {
     if (child->isHorizontalWritingMode())
         return m_layoutOffset.height() + childLogicalOffset - m_pageOffset.height();
     return m_layoutOffset.width() + childLogicalOffset - m_pageOffset.width();
 }
 
 void LayoutState::addForcedColumnBreak(RenderBox* child, LayoutUnit childLogicalOffset)
 {
     if (!m_columnInfo || m_columnInfo->columnHeight())
         return;
@@ skipping 74 matching lines @@
             LayoutUnit paginationDelta = gridLineHeight - remainder;
             if (isHorizontalWritingMode)
                 m_lineGridPaginationOrigin.setHeight(paginationDelta);
             else
                 m_lineGridPaginationOrigin.setWidth(paginationDelta);
         }
     }
 }
 
 } // namespace WebCore