Paint collapsed borders of a table as one display item

third_party/WebKit/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)
  *
@@ skipping 114 matching lines @@
 
   if (!oldStyle)
     return;
 
   LayoutTable* table = this->table();
   if (!table)
     return;
 
   if (!table->selfNeedsLayout() && !table->normalChildNeedsLayout() &&
       oldStyle->border() != style()->border())
-    table->invalidateCollapsedBorders();
+    table->invalidateCollapsedBorders(PaintInvalidationStyleChange);
 
   if (LayoutTableBoxComponent::doCellsHaveDirtyWidth(*this, *table, diff,
                                                      *oldStyle))
     markAllCellsWidthsDirtyAndOrNeedsLayout(
         LayoutTable::MarkDirtyAndNeedsLayout);
 }
 
 void LayoutTableSection::willBeRemovedFromTree() {
   LayoutTableBoxComponent::willBeRemovedFromTree();
 
@@ skipping 1931 matching lines @@
   // the header in all columns.
   // Note that this is in flow thread coordinates, not visual coordinates. The
   // enclosing LayoutFlowThread will convert to visual coordinates.
   if (table()->header() == this && isRepeatingHeaderGroup())
     rect.setHeight(table()->logicalHeight());
   return LayoutTableBoxComponent::mapToVisualRectInAncestorSpace(ancestor, rect,
                                                                  flags);
 }
 
 }  // namespace blink