Pass around CSSSelector by reference instead of pointer

Source/core/html/shadow/HTMLContentElement.cpp

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 73 matching lines @@
 bool HTMLContentElement::validateSelect() const
 {
     ASSERT(!m_shouldParseSelect);
 
     if (m_select.isNull() || m_select.isEmpty())
         return true;
 
     if (!m_selectorList.isValid())
         return false;
 
-    for (const CSSSelector* selector = m_selectorList.first(); selector; selector = m_selectorList.next(selector)) {
+    for (const CSSSelector* selector = m_selectorList.first(); selector; selector = m_selectorList.next(*selector)) {
         if (!selector->isCompound())
             return false;
     }
 
     return true;
 }
 
-static inline bool checkOneSelector(const CSSSelector* selector, const Vector<Node*, 32>& siblings, int nth)
+static inline bool checkOneSelector(const CSSSelector& selector, const Vector<Node*, 32>& siblings, int nth)
 {
     Element* element = toElement(siblings[nth]);
     SelectorChecker selectorChecker(element->document(), SelectorChecker::CollectingCSSRules);
     SelectorChecker::SelectorCheckingContext context(selector, element, SelectorChecker::VisitedMatchEnabled);
     ShadowDOMSiblingTraversalStrategy strategy(siblings, nth);
     return selectorChecker.match(context, strategy) == SelectorChecker::SelectorMatches;
 }
 
 bool HTMLContentElement::matchSelector(const Vector<Node*, 32>& siblings, int nth) const
 {
-    for (const CSSSelector* selector = selectorList().first(); selector; selector = CSSSelectorList::next(selector)) {
-        if (checkOneSelector(selector, siblings, nth))
+    for (const CSSSelector* selector = selectorList().first(); selector; selector = CSSSelectorList::next(*selector)) {
+        if (checkOneSelector(*selector, siblings, nth))
             return true;
     }
     return false;
 }
 
 }