Clean up break-inside restriction propagation from table headers.

third_party/WebKit/Source/core/layout/LayoutTableRow.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, 2007, 2008, 2009, 2010, 2013
 *                Apple Inc.
  *               All rights reserved.
  *
@@ skipping 240 matching lines @@
         updateHitTestResult(
             result, locationInContainer.point() - toLayoutSize(cellPoint));
         return true;
       }
     }
   }
 
   return false;
 }
 
+LayoutBox::PaginationBreakability LayoutTableRow::getPaginationBreakability()
+    const {
+  PaginationBreakability breakability =
+      LayoutTableBoxComponent::getPaginationBreakability();
+  if (breakability == AllowAnyBreaks) {
+    // Even if the row allows us to break inside, we will want to prevent that
+    // if we have a header group that wants to appear at the top of each page.
+    if (const LayoutTableSection* header = table()->header())
+      breakability = header->getPaginationBreakability();
+  }
+  return breakability;
+}
+
 void LayoutTableRow::paint(const PaintInfo& paintInfo,
                            const LayoutPoint& paintOffset) const {
   TableRowPainter(*this).paint(paintInfo, paintOffset);
 }
 
 LayoutTableRow* LayoutTableRow::createAnonymous(Document* document) {
   LayoutTableRow* layoutObject = new LayoutTableRow(nullptr);
   layoutObject->setDocumentForAnonymous(document);
   return layoutObject;
 }
@@ skipping 31 matching lines @@
   // the visual overflow should be determined in the coordinate system of
   // the row, that's why we shift it below.
   LayoutUnit cellOffsetLogicalTopDifference =
       cell->location().y() - location().y();
   cellVisualOverflowRect.move(LayoutUnit(), cellOffsetLogicalTopDifference);
 
   addContentsVisualOverflow(cellVisualOverflowRect);
 }
 
 }  // namespace blink