Handle nested theads correctly when paginated

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

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 46 matching lines @@
         m_flowThread = nullptr;
     layoutObject.view()->pushLayoutState(*this);
     bool fixed = layoutObject.isOutOfFlowPositioned() && layoutObject.style()->position() == FixedPosition;
     if (fixed) {
         // FIXME: This doesn't work correctly with transforms.
         FloatPoint fixedOffset = layoutObject.view()->localToAbsolute(FloatPoint(), IsFixed);
         m_layoutOffset = LayoutSize(fixedOffset.x(), fixedOffset.y()) + offset;
     } else {
         m_layoutOffset = m_next->m_layoutOffset + offset;
     }
+    m_heightOffsetForTableHeaders = m_next->heightOffsetForTableHeaders();
 
     if (layoutObject.isOutOfFlowPositioned() && !fixed) {
         if (LayoutObject* container = layoutObject.container()) {
             if (container->style()->hasInFlowPosition() && container->isLayoutInline())
                 m_layoutOffset += toLayoutInline(container)->offsetForInFlowPositionedInline(layoutObject);
         }
     }
     // If we establish a new page height, then cache the offset to the top of the first page.
     // We can compare this later on to figure out what part of the page we're actually on,
     if (pageLogicalHeight || layoutObject.isLayoutFlowThread()) {
@@ skipping 57 matching lines @@
 }
 
 LayoutUnit LayoutState::pageLogicalOffset(const LayoutBox& child, const LayoutUnit& childLogicalOffset) const
 {
     if (child.isHorizontalWritingMode())
         return m_layoutOffset.height() + childLogicalOffset - m_pageOffset.height();
     return m_layoutOffset.width() + childLogicalOffset - m_pageOffset.width();
 }
 
 } // namespace blink