Pass around CSSSelector by reference instead of pointer

Source/core/css/StyleInvalidationAnalysis.cpp

 /*
  * Copyright (C) 2012 Apple 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 28 matching lines @@
 
 StyleInvalidationAnalysis::StyleInvalidationAnalysis(const Vector<StyleSheetContents*>& sheets)
     : m_dirtiesAllStyle(false)
 {
     for (unsigned i = 0; i < sheets.size() && !m_dirtiesAllStyle; ++i)
         analyzeStyleSheet(sheets[i]);
 }
 
 static bool determineSelectorScopes(const CSSSelectorList& selectorList, HashSet<StringImpl*>& idScopes, HashSet<StringImpl*>& classScopes)
 {
-    for (const CSSSelector* selector = selectorList.first(); selector; selector = CSSSelectorList::next(selector)) {
+    for (const CSSSelector* selector = selectorList.first(); selector; selector = CSSSelectorList::next(*selector)) {
         const CSSSelector* scopeSelector = 0;
         // This picks the widest scope, not the narrowest, to minimize the number of found scopes.
         for (const CSSSelector* current = selector; current; current = current->tagHistory()) {
             // Prefer ids over classes.
             if (current->m_match == CSSSelector::Id)
                 scopeSelector = current;
             else if (current->m_match == CSSSelector::Class && (!scopeSelector || scopeSelector->m_match != CSSSelector::Id))
                 scopeSelector = current;
             CSSSelector::Relation relation = current->relation();
             if (relation != CSSSelector::Descendant && relation != CSSSelector::Child && relation != CSSSelector::SubSelector)
@@ skipping 149 matching lines @@
             element->setNeedsStyleRecalc();
             // The whole subtree is now invalidated, we can skip to the next sibling.
             element = ElementTraversal::nextSkippingChildren(*element);
             continue;
         }
         element = ElementTraversal::next(*element);
     }
 }
 
 }