CSSValue Immediates: Replace CSSValue usage with const references

Source/core/css/CSSValueList.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 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 20 matching lines @@
 {
     m_valueListSeparator = listSeparator;
 }
 
 CSSValueList::CSSValueList(ValueListSeparator listSeparator)
     : CSSValueObject(ValueListClass)
 {
     m_valueListSeparator = listSeparator;
 }
 
-bool CSSValueList::removeAll(CSSValue val)
+bool CSSValueList::removeAll(const CSSValue& val)
 {
     bool found = false;
     for (int index = m_values.size() - 1; index >= 0; --index) {
         CSSValue& value = m_values.at(index);
         if (value.equals(val)) {
             m_values.remove(index);
             found = true;
         }
     }
 
     return found;
 }
 
-bool CSSValueList::hasValue(CSSValue val) const
+bool CSSValueList::hasValue(const CSSValue& val) const
 {
     for (size_t index = 0; index < m_values.size(); index++) {
         const CSSValue& value = m_values.at(index);
         if (value.equals(val))
             return true;
     }
     return false;
 }
 
 PassRefPtrWillBeRawPtr<CSSValueList> CSSValueList::copy()
@@ skipping 61 matching lines @@
 
 DEFINE_TRACE_AFTER_DISPATCH(CSSValueList)
 {
     for (unsigned i = 0; i < m_values.size(); ++i) {
         visitor->trace(m_values[i]);
     }
     CSSValueObject::traceAfterDispatch(visitor);
 }
 
 } // namespace blink