Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 25 matching lines @@
 namespace blink {
 
 class LayoutRubyRun;
 
 class LayoutRubyBase final : public LayoutBlockFlow {
  public:
   ~LayoutRubyBase() override;
   static LayoutRubyBase* createAnonymous(Document*);
 
   const char* name() const override { return "LayoutRubyBase"; }
+  char objectSize() const override { return sizeof(this); }
 
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectRubyBase || LayoutBlockFlow::isOfType(type);
   }
 
   bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
 
  private:
   LayoutRubyBase();
 
@@ skipping 11 matching lines @@
 
   // Allow LayoutRubyRun to manipulate the children within ruby bases.
   friend class LayoutRubyRun;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutRubyBase, isRubyBase());
 
 }  // namespace blink
 
 #endif  // LayoutRubyBase_h