Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 55 matching lines @@
 
   const char* name() const override { return "LayoutRuby (inline)"; }
 
  protected:
   void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
 
  private:
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectRuby || LayoutInline::isOfType(type);
   }
+  char objectSize() const override { return sizeof(this); }
   bool createsAnonymousWrapper() const override { return true; }
 };
 
 // <ruby> when used as 'display:block' or 'display:inline-block'
 class LayoutRubyAsBlock final : public LayoutBlockFlow {
  public:
   LayoutRubyAsBlock(Element*);
   ~LayoutRubyAsBlock() override;
 
   void addChild(LayoutObject* child,
                 LayoutObject* beforeChild = nullptr) override;
   void removeChild(LayoutObject* child) override;
 
   const char* name() const override { return "LayoutRuby (block)"; }
+  char objectSize() const override { return sizeof(this); }
 
  protected:
   void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
 
  private:
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectRuby || LayoutBlockFlow::isOfType(type);
   }
   bool createsAnonymousWrapper() const override { return true; }
   void removeLeftoverAnonymousBlock(LayoutBlock*) override { NOTREACHED(); }
 };
 
 }  // namespace blink
 
 #endif  // LayoutRuby_h