[WIP] do something :-)

Source/platform/Length.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller ( mueller@kde.org )
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  *
  * 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
@@ skipping 10 matching lines @@
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #include "config.h"
 #include "platform/Length.h"
 
 #include "platform/CalculationValue.h"
 #include "platform/animation/AnimationUtilities.h"
 #include "wtf/ASCIICType.h"
+#include "wtf/SizeAssertions.h"
 #include "wtf/text/StringBuffer.h"
 #include "wtf/text/WTFString.h"
 
 using namespace WTF;
 
 namespace blink {
 
+ASSERT_SIZE(Length, 8, 8);
+
 template<typename CharType>
 static unsigned splitLength(const CharType* data, unsigned length, unsigned& intLength, unsigned& doubleLength)
 {
     ASSERT(length);
 
     unsigned i = 0;
     while (i < length && isSpaceOrNewline(data[i]))
         ++i;
     if (i < length && (data[i] == '+' || data[i] == '-'))
         ++i;
@@ skipping 187 matching lines @@
     if (std::isnan(result))
         return 0;
     return result;
 }
 
 bool Length::isCalculatedEqual(const Length& o) const
 {
     return isCalculated() && (&calculationValue() == &o.calculationValue() || calculationValue() == o.calculationValue());
 }
 
-struct SameSizeAsLength {
-    int32_t value;
-    int32_t metaData;
-};
-static_assert(sizeof(Length) == sizeof(SameSizeAsLength), "length should stay small");
-
 } // namespace blink