top and bottom black background line not getting displayed

Source/core/rendering/AutoTableLayout.cpp

 /*
  * Copyright (C) 2002 Lars Knoll (knoll@kde.org)
  *           (C) 2002 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2008, 2010 Apple Inc. 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License.
  *
@@ skipping 47 matching lines @@
         } else if (child->isTableSection()) {
             RenderTableSection* section = toRenderTableSection(child);
             unsigned numRows = section->numRows();
             for (unsigned i = 0; i < numRows; i++) {
                 RenderTableSection::CellStruct current = section->cellAt(i, effCol);
                 RenderTableCell* cell = current.primaryCell();
 
                 if (current.inColSpan || !cell)
                     continue;
 
-                bool cellHasContent = cell->children()->firstChild() || cell->style()->hasBorder() || cell->style()->hasPadding();
+                bool cellHasContent = cell->children()->firstChild() || cell->style()->hasBorder() || cell->style()->hasPadding() || cell->style()->hasBackground();
                 if (cellHasContent)
                     columnLayout.emptyCellsOnly = false;
 
                 // A cell originates in this column. Ensure we have
                 // a min/max width of at least 1px for this column now.
                 columnLayout.minLogicalWidth = max<int>(columnLayout.minLogicalWidth, cellHasContent ? 1 : 0);
                 columnLayout.maxLogicalWidth = max<int>(columnLayout.maxLogicalWidth, 1);
 
                 if (cell->colSpan() == 1) {
                     columnLayout.minLogicalWidth = max<int>(cell->minPreferredLogicalWidth(), columnLayout.minLogicalWidth);
@@ skipping 630 matching lines @@
 
     int pos = 0;
     for (size_t i = 0; i < nEffCols; ++i) {
         m_table->setColumnPosition(i, pos);
         pos += m_layoutStruct[i].computedLogicalWidth + m_table->hBorderSpacing();
     }
     m_table->setColumnPosition(m_table->columnPositions().size() - 1, pos);
 }
 
 }