C++11: Replace 0 with nullptr where applicable in layout code.

Source/core/layout/LayoutTableSection.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, 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 716 matching lines @@
             // Our base size is the biggest logical height from our cells' styles (excluding row spanning cells).
             m_rowPos[r + 1] = std::max(m_rowPos[r] + minimumValueForLength(m_grid[r].logicalHeight, 0).round(), 0);
         } else {
             // Non-specified lengths are ignored because the row already accounts for the cells
             // intrinsic logical height.
             m_rowPos[r + 1] = std::max(m_rowPos[r], 0);
         }
 
         Row& row = m_grid[r].row;
         unsigned totalCols = row.size();
-        LayoutTableCell* lastRowSpanCell = 0;
+        LayoutTableCell* lastRowSpanCell = nullptr;
 
         for (unsigned c = 0; c < totalCols; c++) {
             CellStruct& current = cellAt(r, c);
             for (unsigned i = 0; i < current.cells.size(); i++) {
                 cell = current.cells[i];
                 if (current.inColSpan && cell->rowSpan() == 1)
                     continue;
 
                 if (cell->rowSpan() > 1) {
                     // For row spanning cells, we only handle them for the first row they span. This ensures we take their baseline into account.
@@ skipping 859 matching lines @@
 {
     ASSERT(table()->collapseBorders());
     CellsCollapsedBordersMap::const_iterator it = m_cellsCollapsedBorders.find(std::make_pair(cell, side));
     ASSERT_WITH_SECURITY_IMPLICATION(it != m_cellsCollapsedBorders.end());
     return it->value;
 }
 
 LayoutTableSection* LayoutTableSection::createAnonymousWithParent(const LayoutObject* parent)
 {
     RefPtr<ComputedStyle> newStyle = ComputedStyle::createAnonymousStyleWithDisplay(parent->styleRef(), TABLE_ROW_GROUP);
-    LayoutTableSection* newSection = new LayoutTableSection(0);
+    LayoutTableSection* newSection = new LayoutTableSection(nullptr);
     newSection->setDocumentForAnonymous(&parent->document());
     newSection->setStyle(newStyle.release());
     return newSection;
 }
 
 void LayoutTableSection::setLogicalPositionForCell(LayoutTableCell* cell, unsigned effectiveColumn) const
 {
     LayoutPoint cellLocation(0, m_rowPos[cell->rowIndex()]);
     int horizontalBorderSpacing = table()->hBorderSpacing();
 
     // FIXME: The table's direction should determine our row's direction, not the section's (see bug 96691).
     if (!style()->isLeftToRightDirection())
         cellLocation.setX(table()->columnPositions()[table()->numEffCols()] - table()->columnPositions()[table()->colToEffCol(cell->col() + cell->colSpan())] + horizontalBorderSpacing);
     else
         cellLocation.setX(table()->columnPositions()[effectiveColumn] + horizontalBorderSpacing);
 
     cell->setLogicalLocation(cellLocation);
 }
 
 } // namespace blink