[LayoutNG] Move NGInlineNode data to NGInlineNodeData.

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

Index: third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.cc b/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.cc
index 2a4538edaf010e6c33d6f46bf73d4eed75d62acd..b6650d654474992cf7d2ff57303466420a28d005 100644
--- a/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.cc
+++ b/third_party/WebKit/Source/core/layout/ng/layout_ng_block_flow.cc
@@ -52,4 +52,13 @@ void LayoutNGBlockFlow::UpdateBlockLayout(bool relayout_children) {
   ClearNeedsLayout();
 }
 
+NGInlineNodeData& LayoutNGBlockFlow::GetNGInlineNodeData() const {
+  DCHECK(ng_inline_node_data_);
+  return *ng_inline_node_data_.get();
+}
+
+void LayoutNGBlockFlow::ResetNGInlineNodeData() {
+  ng_inline_node_data_ = WTF::MakeUnique<NGInlineNodeData>();
+}
+
 }  // namespace blink