Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 24 matching lines @@
 
   double position() const { return m_position; }
   double animationProgress() const;
 
   bool isDeterminate() const;
   void updateFromElement() override;
 
   HTMLProgressElement* progressElement() const;
 
   const char* name() const override { return "LayoutProgress"; }
+  char objectSize() const override { return sizeof(this); }
 
  protected:
   void willBeDestroyed() override;
 
   bool isAnimating() const;
   bool isAnimationTimerActive() const;
 
  private:
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectProgress || LayoutBlockFlow::isOfType(type);
@@ skipping 10 matching lines @@
   TaskRunnerTimer<LayoutProgress> m_animationTimer;
 
   friend class LayoutProgressTest;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutProgress, isProgress());
 
 }  // namespace blink
 
 #endif  // LayoutProgress_h