Be more restrictive about forcing relayout of children for pagination.

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 972 matching lines @@
         ASSERT(endCol < table()->effectiveColumns().size());
         cspan -= table()->effectiveColumns()[endCol].span;
         endCol++;
       }
       int tableLayoutLogicalWidth = columnPos[endCol] - columnPos[startColumn] -
                                     table()->hBorderSpacing();
       cell->setCellLogicalWidth(tableLayoutLogicalWidth, layouter);
     }
 
     if (LayoutTableRow* rowLayoutObject = m_grid[r].rowLayoutObject) {
-      if (state.isPaginated()) {
+      if (state.isPaginated())
         rowLayoutObject->setLogicalTop(rowLogicalTop);
-        if (!rowLayoutObject->needsLayout())
-          markChildForPaginationRelayoutIfNeeded(*rowLayoutObject, layouter);
-      }
+      if (!rowLayoutObject->needsLayout())
+        markChildForPaginationRelayoutIfNeeded(*rowLayoutObject, layouter);
       rowLayoutObject->layoutIfNeeded();
       if (state.isPaginated()) {
         adjustRowForPagination(*rowLayoutObject, layouter);
+        updateFragmentationInfoForChild(*rowLayoutObject);
         rowLogicalTop = rowLayoutObject->logicalBottom();
         rowLogicalTop += LayoutUnit(table()->vBorderSpacing());
       }
     }
   }
 
   clearNeedsLayout();
 }
 
 void LayoutTableSection::distributeExtraLogicalHeightToPercentRows(
@@ skipping 186 matching lines @@
           crossesPageBoundary(LayoutUnit(rowLogicalTop), LayoutUnit(rHeight)))
         cellVerticalAlign = VerticalAlignTop;
       else
         cellVerticalAlign = cell->style()->verticalAlign();
       cell->computeIntrinsicPadding(rHeight, cellVerticalAlign, layouter);
 
       LayoutRect oldCellRect = cell->frameRect();
 
       setLogicalPositionForCell(cell, c);
 
-      if (!cell->needsLayout())
-        markChildForPaginationRelayoutIfNeeded(*cell, layouter);
-
       cell->layoutIfNeeded();
 
       LayoutSize childOffset(cell->location() - oldCellRect.location());
       if (childOffset.width() || childOffset.height()) {
         // If the child moved, we have to issue paint invalidations to it as
         // well as any floating/positioned descendants. An exception is if we
         // need a layout. In this case, we know we're going to issue paint
         // invalidations ourselves (and the child) anyway.
         if (!table()->selfNeedsLayout())
           cell->setMayNeedPaintInvalidation();
@@ skipping 858 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