Do-not-commit: Count layout tree memory usage

third_party/WebKit/Source/core/layout/LayoutTextControlSingleLine.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 28 matching lines @@
   PassRefPtr<ComputedStyle> createInnerEditorStyle(
       const ComputedStyle& startStyle) const final;
 
   void capsLockStateMayHaveChanged();
 
  protected:
   Element* containerElement() const;
   Element* editingViewPortElement() const;
   HTMLInputElement* inputElement() const;
 
+  char objectSize() const override { return sizeof(this); }
+
  private:
   bool hasControlClip() const final;
   LayoutRect controlClipRect(const LayoutPoint&) const final;
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectTextField || LayoutTextControl::isOfType(type);
   }
 
   void paint(const PaintInfo&, const LayoutPoint&) const override;
   void layout() override;
 
@@ skipping 32 matching lines @@
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTextControlSingleLine, isTextField());
 
 // ----------------------------
 
 class LayoutTextControlInnerEditor : public LayoutBlockFlow {
  public:
   LayoutTextControlInnerEditor(Element* element) : LayoutBlockFlow(element) {}
   bool shouldIgnoreOverflowPropertyForInlineBlockBaseline() const override {
     return true;
   }
+  char objectSize() const override { return sizeof(this); }
 
  private:
   bool isIntrinsicallyScrollable(
       ScrollbarOrientation orientation) const override {
     return orientation == HorizontalScrollbar;
   }
   bool scrollsOverflowX() const override { return hasOverflowClip(); }
   bool scrollsOverflowY() const override { return false; }
   bool hasLineIfEmpty() const override { return true; }
 };
 
 }  // namespace blink
 
 #endif