[LayoutNG] Add NGLayoutInputNode::ShowNodeTree

third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.h

Index: third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.h
diff --git a/third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.h b/third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.h
index b60bbe4b1ed7c264aaae9a41b087abeeb25fd914..4524c5d852d0f94933bcffc32e3c8e760a9c129e 100644
--- a/third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.h
+++ b/third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.h
@@ -39,7 +39,7 @@ class CORE_EXPORT NGInlineNode : public NGLayoutInputNode {
 
   RefPtr<NGLayoutResult> Layout(NGConstraintSpace*,
                                 NGBreakToken* = nullptr) override;
-  LayoutObject* GetLayoutObject() override;
+  LayoutObject* GetLayoutObject() const override;
 
   // Computes the value of min-content and max-content for this anonymous block
   // box. min-content is the inline size when lines wrap at every break
@@ -68,6 +68,8 @@ class CORE_EXPORT NGInlineNode : public NGLayoutInputNode {
   void AssertOffset(unsigned index, unsigned offset) const;
   void AssertEndOffset(unsigned index, unsigned offset) const;
 
+  String ToString() const override;
+
   DECLARE_VIRTUAL_TRACE();
 
  protected: