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

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.
  *               All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. 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
@@ skipping 500 matching lines @@
   PaintLayer* layer = enclosingLayer();
   if (!needsLayout() && layer->hasCompositedLayerMapping() &&
       !layer->visualRect().contains(visualOverflowRect()))
     layer->setNeedsCompositingInputsUpdate();
 }
 
 void LayoutBlock::addOverflowFromBlockChildren() {
   for (LayoutBox* child = firstChildBox(); child;
        child = child->nextSiblingBox()) {
     if (!child->isFloatingOrOutOfFlowPositioned() && !child->isColumnSpanAll())
-      addOverflowFromChild(child);
+      addOverflowFromChild(*child);
   }
 }
 
 void LayoutBlock::addOverflowFromPositionedObjects() {
   TrackedLayoutBoxListHashSet* positionedDescendants = positionedObjects();
   if (!positionedDescendants)
     return;
 
   for (auto* positionedObject : *positionedDescendants) {
     // Fixed positioned elements don't contribute to layout overflow, since they
     // don't scroll with the content.
     if (positionedObject->style()->position() != EPosition::kFixed)
-      addOverflowFromChild(positionedObject,
+      addOverflowFromChild(*positionedObject,
                            toLayoutSize(positionedObject->location()));
   }
 }
 
 void LayoutBlock::addVisualOverflowFromTheme() {
   if (!style()->hasAppearance())
     return;
 
   IntRect inflatedRect = pixelSnappedBorderBoxRect();
   LayoutTheme::theme().addVisualOverflow(*this, inflatedRect);
@@ skipping 1621 matching lines @@
   }
 
   return availableHeight;
 }
 
 bool LayoutBlock::hasDefiniteLogicalHeight() const {
   return availableLogicalHeightForPercentageComputation() != LayoutUnit(-1);
 }
 
 }  // namespace blink