[WIP] do something :-)

Source/core/html/parser/CompactHTMLToken.cpp

 /*
  * Copyright (C) 2013 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/html/parser/CompactHTMLToken.h"
 
 #include "core/dom/QualifiedName.h"
 #include "core/html/parser/HTMLParserIdioms.h"
+#include "wtf/SizeAssertions.h"
 
 namespace blink {
 
-struct SameSizeAsCompactHTMLToken  {
-    unsigned bitfields;
-    String data;
-    Vector<Attribute> vector;
-    TextPosition textPosition;
-};
-
-static_assert(sizeof(CompactHTMLToken) == sizeof(SameSizeAsCompactHTMLToken), "CompactHTMLToken should stay small");
+ASSERT_SIZE(CompactHTMLToken, 28, 40);
 
 CompactHTMLToken::CompactHTMLToken(const HTMLToken* token, const TextPosition& textPosition)
     : m_type(token->type())
     , m_isAll8BitData(false)
     , m_doctypeForcesQuirks(false)
     , m_textPosition(textPosition)
 {
     switch (m_type) {
     case HTMLToken::Uninitialized:
         ASSERT_NOT_REACHED();
@@ skipping 43 matching lines @@
     for (const Attribute& attribute : m_attributes) {
         if (!attribute.name.isSafeToSendToAnotherThread())
             return false;
         if (!attribute.value.isSafeToSendToAnotherThread())
             return false;
     }
     return m_data.isSafeToSendToAnotherThread();
 }
 
 }