Remove some dead code from css/ folder

Source/core/css/CSSParserValues.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008 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 11 matching lines @@
 #include "core/css/CSSParserValues.h"
 
 #include "core/css/CSSFunctionValue.h"
 #include "core/css/CSSSelectorList.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 
 namespace WebCore {
 
 using namespace WTF;
 
-AtomicString CSSParserString::atomicSubstring(unsigned position, unsigned length) const
-{
-    ASSERT(m_length >= position + length);
-
-    if (is8Bit())
-        return AtomicString(characters8() + position, length);
-    return AtomicString(characters16() + position, length);
-}
-
-void CSSParserString::trimTrailingWhitespace()
-{
-    if (is8Bit()) {
-        while (m_length > 0 && isHTMLSpace<LChar>(m_data.characters8[m_length - 1]))
-            --m_length;
-    } else {
-        while (m_length > 0 && isHTMLSpace<UChar>(m_data.characters16[m_length - 1]))
-            --m_length;
-    }
-}
-
 CSSParserValueList::~CSSParserValueList()
 {
     size_t numValues = m_values.size();
     for (size_t i = 0; i < numValues; i++) {
         if (m_values[i].unit == CSSParserValue::Function)
             delete m_values[i].function;
         else if (m_values[i].unit == CSSParserValue::ValueList)
             delete m_values[i].valueList;
     }
 }
 
 void CSSParserValueList::addValue(const CSSParserValue& v)
 {
     m_values.append(v);
 }
 
 void CSSParserValueList::insertValueAt(unsigned i, const CSSParserValue& v)
 {
     m_values.insert(i, v);
 }
 
-void CSSParserValueList::deleteValueAt(unsigned i)
-{
-    m_values.remove(i);
-}
-
 void CSSParserValueList::stealValues(CSSParserValueList& valueList)
 {
     for (unsigned i = 0; i < valueList.size(); ++i)
         m_values.append(*(valueList.valueAt(i)));
     valueList.clear();
 }
 
 PassRefPtrWillBeRawPtr<CSSValue> CSSParserValue::createCSSValue()
 {
     if (id)
@@ skipping 157 matching lines @@
 {
     CSSParserSelector* selector = const_cast<CSSParserSelector*>(this);
     do {
         if (selector->pseudoType() == CSSSelector::PseudoHost || selector->pseudoType() == CSSSelector::PseudoHostContext)
             return true;
     } while ((selector = selector->tagHistory()));
     return false;
 }
 
 } // namespace WebCore