Clean up break-inside restriction propagation from table headers.

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 1235 matching lines @@
   ASSERT(!needsLayout());
 
   setLogicalHeight(LayoutUnit(m_rowPos[totalRows]));
 
   computeOverflowFromCells(totalRows, nEffCols);
 }
 
 int LayoutTableSection::paginationStrutForRow(LayoutTableRow* row,
                                               LayoutUnit logicalOffset) const {
   DCHECK(row);
-  // Even if the row allows us to break-inside, we will want to put a strut on
-  // the row if we have a header group that wants to appear at the top of each
-  // page.
-  bool tableHeaderForcesStrut =
-      table()->header()
-          ? table()->header()->getPaginationBreakability() != AllowAnyBreaks
-          : false;
-  if (row->getPaginationBreakability() == AllowAnyBreaks &&
-      !tableHeaderForcesStrut)
+  if (row->getPaginationBreakability() == AllowAnyBreaks)
     return 0;
   LayoutUnit pageLogicalHeight = pageLogicalHeightForOffset(logicalOffset);
   if (!pageLogicalHeight)
     return 0;
   // If the row is too tall for the page don't insert a strut.
   LayoutUnit rowLogicalHeight = row->logicalHeight();
   if (rowLogicalHeight > pageLogicalHeight)
     return 0;
 
   LayoutUnit remainingLogicalHeight = pageRemainingLogicalHeightForOffset(
@@ skipping 736 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