Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2009, 2013 Apple Inc.
  *               All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 110 matching lines @@
   bool nodeAtPoint(HitTestResult&,
                    const HitTestLocation& locationInContainer,
                    const LayoutPoint& accumulatedOffset,
                    HitTestAction) override;
 
   PaginationBreakability getPaginationBreakability() const final;
 
   void computeOverflow();
 
   const char* name() const override { return "LayoutTableRow"; }
+  char objectSize() const override { return sizeof(this); }
 
   // Whether a row has opaque background depends on many factors, e.g. border
   // spacing, border collapsing, missing cells, etc.
   // For simplicity, just conservatively assume all table rows are not opaque.
   bool foregroundIsKnownToBeOpaqueInRect(const LayoutRect&,
                                          unsigned) const override {
     return false;
   }
   bool backgroundIsKnownToBeOpaqueInRect(const LayoutRect&) const override {
     return false;
@@ skipping 54 matching lines @@
   return toLayoutTableRow(firstChild());
 }
 
 inline LayoutTableRow* LayoutTableSection::lastRow() const {
   return toLayoutTableRow(lastChild());
 }
 
 }  // namespace blink
 
 #endif  // LayoutTableRow_h