Content of cell should avoid repeating headers when it straddles multiple pages

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 1994 matching lines @@
     }
 
     if (!rowIsAtTopOfColumn)
       return;
   }
   // We need to push this row to the next fragmentainer. If there are repeated
   // table headers, we need to make room for those at the top of the next
   // fragmentainer, above this row. Otherwise, this row will just go at the top
   // of the next fragmentainer.
 
-  // If there isn't room for at least one content row on a page with a
-  // header group, then we won't repeat the header on each page.
   LayoutTableSection* header = table()->header();
-  if (!rowObject.rowIndex() && header &&
-      table()->sectionAbove(this) == header &&
-      header->getPaginationBreakability() != AllowAnyBreaks) {
+  if (rowObject.isFirstRowInSectionAfterHeader())
     table()->setRowOffsetFromRepeatingHeader(LayoutUnit());
-  }
   // Border spacing from the previous row has pushed this row just past the top
   // of the page, so we must reposition it to the top of the page and avoid any
   // repeating header.
   if (rowIsAtTopOfColumn && offsetFromTopOfPage)
     paginationStrut -= offsetFromTopOfPage.toInt();
 
   // If we have a header group we will paint it at the top of each page,
   // move the rows down to accomodate it.
   if (header)
     paginationStrut += table()->rowOffsetFromRepeatingHeader().toInt();
@@ skipping 51 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