Factor painting code out of RenderBox into a new class called BoxPainter.

Source/core/rendering/RenderTable.cpp

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 47 matching lines @@
     , m_collapsedBordersValid(false)
     , m_hasColElements(false)
     , m_needsSectionRecalc(false)
     , m_columnLogicalWidthChanged(false)
     , m_columnRenderersValid(false)
     , m_hasCellColspanThatDeterminesTableWidth(false)
     , m_hSpacing(0)
     , m_vSpacing(0)
     , m_borderStart(0)
     , m_borderEnd(0)
+    , m_boxPainter(*this)
 {
     ASSERT(!childrenInline());
     m_columnPos.fill(0, 1);
 }
 
 RenderTable::~RenderTable()
 {
 }
 
 void RenderTable::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
@@ skipping 624 matching lines @@
     }
 }
 
 void RenderTable::paintBoxDecorationBackground(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     if (!paintInfo.shouldPaintWithinRoot(this))
         return;
 
     LayoutRect rect(paintOffset, size());
     subtractCaptionRect(rect);
-    paintBoxDecorationBackgroundWithRect(paintInfo, paintOffset, rect);
+    m_boxPainter.paintBoxDecorationBackgroundWithRect(paintInfo, paintOffset, rect);
 }
 
 void RenderTable::paintMask(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     if (style()->visibility() != VISIBLE || paintInfo.phase != PaintPhaseMask)
         return;
 
     LayoutRect rect(paintOffset, size());
     subtractCaptionRect(rect);
 
-    paintMaskImages(paintInfo, rect);
+    m_boxPainter.paintMaskImages(paintInfo, rect);
 }
 
 void RenderTable::computeIntrinsicLogicalWidths(LayoutUnit& minWidth, LayoutUnit& maxWidth) const
 {
     recalcSectionsIfNeeded();
     // FIXME: Do the recalc in borderStart/borderEnd and make those const_cast this call.
     // Then m_borderStart/m_borderEnd will be transparent a cache and it removes the possibility
     // of reading out stale values.
     const_cast<RenderTable*>(this)->recalcBordersInRowDirection();
     // FIXME: Restructure the table layout code so that we can make this method const.
@@ skipping 683 matching lines @@
 const BorderValue& RenderTable::tableEndBorderAdjoiningCell(const RenderTableCell* cell) const
 {
     ASSERT(cell->isFirstOrLastCellInRow());
     if (hasSameDirectionAs(cell->row()))
         return style()->borderEnd();
 
     return style()->borderStart();
 }
 
 }