Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010, 2012 Apple Inc.
  *               All rights reserved.
  *
  * 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.
@@ skipping 26 matching lines @@
 
   enum PluginAvailability {
     PluginAvailable,
     PluginMissing,
     PluginBlockedByContentSecurityPolicy,
   };
   void setPluginAvailability(PluginAvailability);
   bool showsUnavailablePluginIndicator() const;
 
   const char* name() const override { return "LayoutEmbeddedObject"; }
+  char objectSize() const override { return sizeof(this); }
 
   const String& unavailablePluginReplacementText() const {
     return m_unavailablePluginReplacementText;
   }
 
  private:
   void paintContents(const PaintInfo&, const LayoutPoint&) const final;
   void paintReplaced(const PaintInfo&, const LayoutPoint&) const final;
   void paint(const PaintInfo&, const LayoutPoint&) const final;
   PaintInvalidationReason invalidatePaintIfNeeded(
@@ skipping 14 matching lines @@
 
   PluginAvailability m_pluginAvailability = PluginAvailable;
   String m_unavailablePluginReplacementText;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutEmbeddedObject, isEmbeddedObject());
 
 }  // namespace blink
 
 #endif  // LayoutEmbeddedObject_h