[LayoutNG] Paint inlines from the fragment tree

third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.h

Index: third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.h
diff --git a/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.h b/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.h
index 81260737f705be3a3033d3f8f3dd0ee42e550701..428c939906d5cee4a9c48e7ffd9501f7e54badf3 100644
--- a/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.h
+++ b/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.h
@@ -9,6 +9,7 @@
 #include "core/layout/LayoutBlockFlow.h"
 #include "core/layout/ng/inline/ng_inline_node_data.h"
 #include "core/layout/ng/ng_block_node.h"
+#include "core/layout/ng/ng_physical_fragment.h"
 
 namespace blink {
 
@@ -26,11 +27,18 @@ class CORE_EXPORT LayoutNGBlockFlow final : public LayoutBlockFlow {
   NGInlineNodeData& GetNGInlineNodeData() const;
   void ResetNGInlineNodeData();
 
+  void PaintObject(const PaintInfo&, const LayoutPoint&) const override;
+
+  NGPhysicalFragment* RootFragment() const { return root_fragment_.Get(); }
+
  private:
   bool IsOfType(LayoutObjectType) const override;
 
   std::unique_ptr<NGInlineNodeData> ng_inline_node_data_;
   Persistent<NGBlockNode> box_;
+
+ public:  // TODO(eae):
+  RefPtr<NGPhysicalFragment> root_fragment_;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutNGBlockFlow, IsLayoutNGBlockFlow());