[css-tables] Set table and cell widths dirty when section border changes

third_party/WebKit/Source/core/layout/TableLayoutAlgorithmFixed.cpp

 /*
  * Copyright (C) 2002 Lars Knoll (knoll@kde.org)
  *           (C) 2002 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc.
  *
  * 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 308 matching lines @@
     m_table->setEffectiveColumnPosition(nEffCols, pos);
 }
 
 void TableLayoutAlgorithmFixed::willChangeTableLayout()
 {
     // When switching table layout algorithm, we need to dirty the preferred
     // logical widths as we cleared the bits without computing them.
     // (see calcWidthArray above.) This optimization is preferred to always
     // computing the logical widths we never intended to use.
     m_table->recalcSectionsIfNeeded();
-    for (LayoutTableSection* section = m_table->topNonEmptySection(); section; section = m_table->sectionBelow(section)) {
-        for (unsigned i = 0; i < section->numRows(); i++) {
-            LayoutTableRow* row = section->rowLayoutObjectAt(i);
-            if (!row)
-                continue;
-            for (LayoutTableCell* cell = row->firstCell(); cell; cell = cell->nextCell())
-                cell->setPreferredLogicalWidthsDirty();
-        }
-    }
+    for (LayoutTableSection* section = m_table->topNonEmptySection(); section; section = m_table->sectionBelow(section))
+        section->markAllCellsWidthsDirtyAndOrNeedsLayout(LayoutTableSection::MarkDirtyOnly);
 }
 
 } // namespace blink