Implement RefCountedCopyable<T>.

third_party/WebKit/Source/core/style/StyleBoxData.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 26 matching lines @@
 StyleBoxData::StyleBoxData()
     : m_minWidth(ComputedStyle::initialMinSize()),
       m_maxWidth(ComputedStyle::initialMaxSize()),
       m_minHeight(ComputedStyle::initialMinSize()),
       m_maxHeight(ComputedStyle::initialMaxSize()),
       m_zIndex(0),
       m_hasAutoZIndex(true),
       m_boxSizing(static_cast<unsigned>(ComputedStyle::initialBoxSizing())),
       m_boxDecorationBreak(BoxDecorationBreakSlice) {}
 
-StyleBoxData::StyleBoxData(const StyleBoxData& o)
-    : RefCounted<StyleBoxData>(),
-      m_width(o.m_width),
-      m_height(o.m_height),
-      m_minWidth(o.m_minWidth),
-      m_maxWidth(o.m_maxWidth),
-      m_minHeight(o.m_minHeight),
-      m_maxHeight(o.m_maxHeight),
-      m_verticalAlign(o.m_verticalAlign),
-      m_zIndex(o.m_zIndex),
-      m_hasAutoZIndex(o.m_hasAutoZIndex),
-      m_boxSizing(o.m_boxSizing),
-      m_boxDecorationBreak(o.m_boxDecorationBreak) {}
-
 bool StyleBoxData::operator==(const StyleBoxData& o) const {
   return m_width == o.m_width && m_height == o.m_height &&
          m_minWidth == o.m_minWidth && m_maxWidth == o.m_maxWidth &&
          m_minHeight == o.m_minHeight && m_maxHeight == o.m_maxHeight &&
          m_verticalAlign == o.m_verticalAlign && m_zIndex == o.m_zIndex &&
          m_hasAutoZIndex == o.m_hasAutoZIndex && m_boxSizing == o.m_boxSizing &&
          m_boxDecorationBreak == o.m_boxDecorationBreak;
 }
 
 }  // namespace blink