Paint backgrounds of a table section/row in one display item

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

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 2394 matching lines @@
   if (!m_floatingObjects)
     return;
 
   const FloatingObjectSet& floatingObjectSet = m_floatingObjects->set();
   FloatingObjectSetIterator end = floatingObjectSet.end();
   for (FloatingObjectSetIterator it = floatingObjectSet.begin(); it != end;
        ++it) {
     const FloatingObject& floatingObject = *it->get();
     if (floatingObject.isDescendant())
       addOverflowFromChild(
-          floatingObject.layoutObject(),
+          *floatingObject.layoutObject(),
           LayoutSize(xPositionForFloatIncludingMargin(floatingObject),
                      yPositionForFloatIncludingMargin(floatingObject)));
   }
 }
 
 void LayoutBlockFlow::computeOverflow(LayoutUnit oldClientAfterEdge,
                                       bool recomputeFloats) {
   LayoutBlock::computeOverflow(oldClientAfterEdge, recomputeFloats);
   if (recomputeFloats || createsNewFormattingContext() ||
       hasSelfPaintingLayer())
@@ skipping 1476 matching lines @@
         // enclosing layer.
         // If makeChildPaintOtherFloats is false, it means that the child must
         // already know about all the floats it should paint.
         floatingObject.setShouldPaint(true);
       }
 
       // Since the float doesn't overhang, it didn't get put into our list. We
       // need to go ahead and add its overflow in to the child now.
       if (floatingObject.isDescendant())
         child->addOverflowFromChild(
-            floatingObject.layoutObject(),
+            *floatingObject.layoutObject(),
             LayoutSize(xPositionForFloatIncludingMargin(floatingObject),
                        yPositionForFloatIncludingMargin(floatingObject)));
     }
   }
 }
 
 LayoutUnit LayoutBlockFlow::lowestFloatLogicalBottom(EClear clear) const {
   if (clear == EClear::kNone || !m_floatingObjects)
     return LayoutUnit();
 
@@ skipping 690 matching lines @@
   return LayoutBlock::invalidatePaintIfNeeded(paintInvalidationState);
 }
 
 void LayoutBlockFlow::invalidateDisplayItemClients(
     PaintInvalidationReason invalidationReason) const {
   BlockFlowPaintInvalidator(*this).invalidateDisplayItemClients(
       invalidationReason);
 }
 
 }  // namespace blink