[WIP] do something :-)

Source/platform/text/BidiContext.cpp

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2006, 2007, 2009, 2010 Apple Inc. All right 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #include "config.h"
 #include "platform/text/BidiContext.h"
 
+#include "wtf/SizeAssertions.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 using namespace WTF::Unicode;
 
-struct SameSizeAsBidiContext : public RefCounted<SameSizeAsBidiContext> {
-    uint32_t bitfields : 16;
-    void* parent;
-};
-
-static_assert(sizeof(BidiContext) == sizeof(SameSizeAsBidiContext), "BidiContext should stay small");
+ASSERT_SIZE(BidiContext, 12, 16);
 
 inline PassRefPtr<BidiContext> BidiContext::createUncached(unsigned char level, Direction direction, bool override, BidiEmbeddingSource source, BidiContext* parent)
 {
     return adoptRef(new BidiContext(level, direction, override, source, parent));
 }
 
 PassRefPtr<BidiContext> BidiContext::create(unsigned char level, Direction direction, bool override, BidiEmbeddingSource source, BidiContext* parent)
 {
     ASSERT(direction == (level % 2 ? RightToLeft : LeftToRight));
 
@@ skipping 56 matching lines @@
     if (&c1 == &c2)
         return true;
     if (c1.level() != c2.level() || c1.override() != c2.override() || c1.dir() != c2.dir() || c1.source() != c2.source())
         return false;
     if (!c1.parent())
         return !c2.parent();
     return c2.parent() && *c1.parent() == *c2.parent();
 }
 
 } // namespace blink