Repeat footers in paginated context

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

Index: third_party/WebKit/Source/core/layout/LayoutTable.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutTable.h b/third_party/WebKit/Source/core/layout/LayoutTable.h
index fe3b67a627df9896665cbefbcc1bc8c538635182..dd073123f7e5ed4dc9a2415775d4616793d983a7 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTable.h
+++ b/third_party/WebKit/Source/core/layout/LayoutTable.h
@@ -253,6 +253,20 @@ class CORE_EXPORT LayoutTable final : public LayoutBlock {
     effective_column_positions_[index] = position;
   }
 
+  // |page| is the page the row is on relative to the start of the table.
+  void SetPositionOfRepeatingFooterGroupOnPage(unsigned page,
+                                               LayoutUnit position) {
+    if (position_of_repeating_footer_group_on_page_.size() <= page)
+      position_of_repeating_footer_group_on_page_.Grow(page + 1);
+    position_of_repeating_footer_group_on_page_[page] = position;
+  }
+  const LayoutUnit GetPositionOfRepeatingFooterGroupOnPage(int page) const {
+    return position_of_repeating_footer_group_on_page_[page];
+  }
+  unsigned PagesWithRepeatingFooters() const {

[mstensho (USE GERRIT), 2017/05/10 10:59:03]

Could you squeeze "Count" (or some synonym) into that method name?

+    return position_of_repeating_footer_group_on_page_.size();
+  }
+
   LayoutTableSection* Header() const {
     // TODO(mstensho): We should ideally DCHECK(!needsSectionRecalc()) here, but
     // we currently cannot, due to crbug.com/693212
@@ -445,7 +459,9 @@ class CORE_EXPORT LayoutTable final : public LayoutBlock {
 
   void PaintMask(const PaintInfo&, const LayoutPoint&) const final;
 
-  void SubtractCaptionRect(LayoutRect&) const;
+  enum CaptionSelector { BottomCaptionsOnly, AllCaptions };
+  void SubtractCaptionRect(LayoutRect&,
+                           CaptionSelector captions = AllCaptions) const;
 
   bool IsLogicalWidthAuto() const;
 
@@ -555,6 +571,8 @@ class CORE_EXPORT LayoutTable final : public LayoutBlock {
   // numEffectiveColumns() + 1.
   mutable Vector<int> effective_column_positions_;
 
+  mutable Vector<LayoutUnit> position_of_repeating_footer_group_on_page_;
+
   // The captions associated with this object.
   mutable Vector<LayoutTableCaption*> captions_;