Use plain int for borders widths when possible

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 1132 matching lines @@
 
     ASSERT(hasOverflowingCell == this->hasOverflowingCell());
 }
 
 int LayoutTableSection::calcBlockDirectionOuterBorder(BlockBorderSide side) const
 {
     unsigned totalCols = table()->numEffCols();
     if (!m_grid.size() || !totalCols)
         return 0;
 
-    unsigned borderWidth = 0;
+    int borderWidth = 0;
 
     const BorderValue& sb = side == BorderBefore ? style()->borderBefore() : style()->borderAfter();
     if (sb.style() == BHIDDEN)
         return -1;
     if (sb.style() > BHIDDEN)
         borderWidth = sb.width();
 
     const BorderValue& rb = side == BorderBefore ? firstRow()->style()->borderBefore() : lastRow()->style()->borderAfter();
     if (rb.style() == BHIDDEN)
         return -1;
@@ skipping 34 matching lines @@
     return borderWidth / 2;
 }
 
 int LayoutTableSection::calcInlineDirectionOuterBorder(InlineBorderSide side) const
 {
     unsigned totalCols = table()->numEffCols();
     if (!m_grid.size() || !totalCols)
         return 0;
     unsigned colIndex = side == BorderStart ? 0 : totalCols - 1;
 
-    unsigned borderWidth = 0;
+    int borderWidth = 0;
 
     const BorderValue& sb = side == BorderStart ? style()->borderStart() : style()->borderEnd();
     if (sb.style() == BHIDDEN)
         return -1;
     if (sb.style() > BHIDDEN)
         borderWidth = sb.width();
 
     if (LayoutTableCol* colGroup = table()->colElement(colIndex)) {
         const BorderValue& gb = side == BorderStart ? colGroup->style()->borderStart() : colGroup->style()->borderEnd();
         if (gb.style() == BHIDDEN)
@@ skipping 428 matching lines @@
     // 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