Don't repeat thead if the first row exceeds the height of the page

third_party/WebKit/Source/core/layout/LayoutTableSection.h

 /*
  * 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, 2009, 2013 Apple Inc. All rights
  * reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 300 matching lines @@
   bool foregroundIsKnownToBeOpaqueInRect(const LayoutRect&,
                                          unsigned) const override {
     return false;
   }
   bool backgroundIsKnownToBeOpaqueInRect(const LayoutRect&) const override {
     return false;
   }
 
   int paginationStrutForRow(LayoutTableRow*, LayoutUnit logicalOffset) const;
 
-  void setOffsetForRepeatingHeader(LayoutUnit offset) {
-    m_offsetForRepeatingHeader = offset;
+  void setRowOffsetFromRepeatingHeader(LayoutUnit offset) {
+    m_rowOffsetFromRepeatingHeader = offset;
   }
-  LayoutUnit offsetForRepeatingHeader() const {
-    return m_offsetForRepeatingHeader;
+  LayoutUnit rowOffsetFromRepeatingHeader() const {
+    return m_rowOffsetFromRepeatingHeader;
   }
 
   bool mapToVisualRectInAncestorSpace(
       const LayoutBoxModelObject* ancestor,
       LayoutRect&,
       VisualRectFlags = DefaultVisualRectFlags) const override;
 
   bool isRepeatingHeaderGroup() const;
 
  protected:
@@ skipping 128 matching lines @@
   HashSet<LayoutTableCell*> m_overflowingCells;
   bool m_forceSlowPaintPathWithOverflowingCell;
 
   // This boolean tracks if we have cells overlapping due to rowspan / colspan
   // (see class comment above about when it could appear).
   //
   // The use is to disable a painting optimization where we just paint the
   // invalidated cells.
   bool m_hasMultipleCellLevels;
 
-  LayoutUnit m_offsetForRepeatingHeader;
+  LayoutUnit m_rowOffsetFromRepeatingHeader;

[mstensho (USE GERRIT), 2016/12/12 19:22:40]

This should be stored in LayoutTable instead.

 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTableSection, isTableSection());
 
 }  // namespace blink
 
 #endif  // LayoutTableSection_h