[LayoutNG] PODify NGLayoutInputNode and sub-classes.

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

Index: third_party/WebKit/Source/core/layout/ng/ng_block_node.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_block_node.h b/third_party/WebKit/Source/core/layout/ng/ng_block_node.h
index 7a0836898c6855ff43905fb954351aeb706ad00b..8abc2b6b6e35d90de4067281ad3cb8d4e3254739 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_block_node.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_block_node.h
@@ -13,7 +13,6 @@
 
 namespace blink {
 
-class ComputedStyle;
 class LayoutObject;
 class NGBreakToken;
 class NGConstraintSpace;
@@ -24,16 +23,12 @@ struct MinMaxContentSize;
 // Represents a node to be laid out.
 class CORE_EXPORT NGBlockNode final : public NGLayoutInputNode {
   friend NGLayoutInputNode;
-
  public:
-  explicit NGBlockNode(LayoutObject*);
-
-  ~NGBlockNode() override;
+  explicit NGBlockNode(LayoutBox*);
 
   RefPtr<NGLayoutResult> Layout(NGConstraintSpace* constraint_space,
-                                NGBreakToken* break_token = nullptr) override;
-  NGLayoutInputNode* NextSibling() override;
-  LayoutObject* GetLayoutObject() const override;
+                                NGBreakToken* break_token = nullptr);
+  NGLayoutInputNode NextSibling() const;
 
   // Computes the value of min-content and max-content for this box.
   // If the underlying layout algorithm's ComputeMinMaxContentSize returns
@@ -41,16 +36,12 @@ class CORE_EXPORT NGBlockNode final : public NGLayoutInputNode {
   // special constraint spaces -- infinite available size for max content, zero
   // available size for min content, and percentage resolution size zero for
   // both.
-  MinMaxContentSize ComputeMinMaxContentSize() override;
-
-  const ComputedStyle& Style() const override;
+  MinMaxContentSize ComputeMinMaxContentSize();
 
-  NGLayoutInputNode* FirstChild();
+  NGLayoutInputNode FirstChild();
 
-  DECLARE_VIRTUAL_TRACE();
-
-  // Runs layout on layout_box_ and creates a fragment for the resulting
-  // geometry.
+  // Runs layout on the underlying LayoutObject and creates a fragment for the
+  // resulting geometry.
   RefPtr<NGLayoutResult> RunOldLayout(const NGConstraintSpace&);
 
   // Called if this is an out-of-flow block which needs to be
@@ -62,18 +53,12 @@ class CORE_EXPORT NGBlockNode final : public NGLayoutInputNode {
 
   bool CanUseNewLayout() const;
 
-  String ToString() const override;
+  String ToString() const;
 
  private:
   // After we run the layout algorithm, this function copies back the geometry
   // data to the layout box.
   void CopyFragmentDataToLayoutBox(const NGConstraintSpace&, NGLayoutResult*);
-
-  // We can either wrap a layout_box_ or a next_sibling_/first_child_
-  // combination.
-  LayoutBox* layout_box_;
-  Member<NGLayoutInputNode> next_sibling_;
-  Member<NGLayoutInputNode> first_child_;
 };
 
 DEFINE_TYPE_CASTS(NGBlockNode,