Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 2010 Apple 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:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 25 matching lines @@
 
 class CORE_EXPORT LayoutFullScreen final : public LayoutFlexibleBox {
  public:
   static LayoutFullScreen* createAnonymous(Document*);
 
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectLayoutFullScreen ||
            LayoutFlexibleBox::isOfType(type);
   }
   const char* name() const override { return "LayoutFullScreen"; }
+  char objectSize() const override { return sizeof(this); }
 
   void resetPlaceholder() { m_placeholder = nullptr; }
   LayoutBlockFlow* placeholder() { return m_placeholder; }
   void createPlaceholder(PassRefPtr<ComputedStyle>,
                          const LayoutRect& frameRect);
 
   static LayoutObject* wrapLayoutObject(LayoutObject*,
                                         LayoutObject*,
                                         Document*);
   void unwrapLayoutObject();
@@ skipping 16 matching lines @@
     DCHECK(!child);
     return ItemPositionCenter;
   }
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutFullScreen, isLayoutFullScreen());
 
 }  // namespace blink
 
 #endif