Make IDL Callbacks non-refcounted by default

Source/core/css/CSSVariablesMap.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
@@ skipping 72 matching lines @@
 {
     if (!m_styleDeclaration)
         return;
     if (m_styleDeclaration->clearVariables(exceptionState)) {
         Iterators::iterator end = m_activeIterators.end();
         for (Iterators::iterator it = m_activeIterators.begin(); it != end; ++it)
             (*it)->clearedVariables();
     }
 }
 
-void CSSVariablesMap::forEach(PassRefPtr<CSSVariablesMapForEachCallback> callback, ScriptValue& thisArg) const
+void CSSVariablesMap::forEach(PassOwnPtr<CSSVariablesMapForEachCallback> callback, ScriptValue& thisArg) const
 {
     forEach(callback, &thisArg);
 }
 
-void CSSVariablesMap::forEach(PassRefPtr<CSSVariablesMapForEachCallback> callback) const
+void CSSVariablesMap::forEach(PassOwnPtr<CSSVariablesMapForEachCallback> callback) const
 {
     forEach(callback, 0);
 }
 
-void CSSVariablesMap::forEach(PassRefPtr<CSSVariablesMapForEachCallback> callback, ScriptValue* thisArg) const
+void CSSVariablesMap::forEach(PassOwnPtr<CSSVariablesMapForEachCallback> callback, ScriptValue* thisArg) const
 {
     if (!m_styleDeclaration)
         return;
     RefPtr<CSSVariablesIterator> iterator = m_styleDeclaration->variablesIterator();
     m_activeIterators.append(iterator.get());
     while (!iterator->atEnd()) {
         String name = iterator->name();
         String value = iterator->value();
         if (thisArg)
             callback->handleItem(*thisArg, value, name, const_cast<CSSVariablesMap*>(this));
         else
             callback->handleItem(value, name, const_cast<CSSVariablesMap*>(this));
         iterator->advance();
     }
     ASSERT(m_activeIterators.last() == iterator.get());
     m_activeIterators.removeLast();
 }
 
 } // namespace WebCore