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

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

Index: third_party/WebKit/Source/core/layout/LayoutBox.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBox.cpp b/third_party/WebKit/Source/core/layout/LayoutBox.cpp
index d9673fa25ee06b0138ebd53efbb1bc8e85a0e74b..f12eb616cb7c3f72111d192fb662d83af1a167ae 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBox.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBox.cpp
@@ -5587,6 +5587,13 @@ LayoutUnit LayoutBox::calculatePaginationStrutToFitContent(
     LayoutUnit contentLogicalHeight) const {
   ASSERT(strutToNextPage ==
          pageRemainingLogicalHeightForOffset(offset, AssociateWithLatterPage));
+  // If we're a cell in a row that straddles a page then avoid the repeating
+  // header group if necessary.
+  if (isTableCell()) {
+    LayoutTableCell* cell = toLayoutTableCell(const_cast<LayoutBox*>(this));

[mstensho (USE GERRIT), 2016/12/20 11:47:00]

Why not keep the constness?

+    if (!cell->row()->isFirstRowInSectionAfterHeader())
+      strutToNextPage += cell->table()->rowOffsetFromRepeatingHeader();
+  }
   LayoutUnit nextPageLogicalTop = offset + strutToNextPage;
   if (pageLogicalHeightForOffset(nextPageLogicalTop) >= contentLogicalHeight)
     return strutToNextPage;  // Content fits just fine in the next page or