Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved.
  *               (http://www.torchmobile.com/)
  * Copyright (C) 2010 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.
@@ skipping 16 matching lines @@
 #include "core/layout/LayoutTextControlSingleLine.h"
 
 namespace blink {
 
 class HTMLInputElement;
 
 class LayoutSearchField final : public LayoutTextControlSingleLine {
  public:
   LayoutSearchField(HTMLInputElement*);
   ~LayoutSearchField() override;
+  char objectSize() const override { return sizeof(this); }
 
  private:
   LayoutUnit computeControlLogicalHeight(
       LayoutUnit lineHeight,
       LayoutUnit nonContentHeight) const override;
 
   Element* searchDecorationElement() const;
   Element* cancelButtonElement() const;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSearchField, isTextField());
 
 }  // namespace blink
 
 #endif  // LayoutSearchField_h