Pass around CSSSelector by reference instead of pointer

Source/core/css/RuleSet.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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 53 matching lines @@
     AddRuleFlags m_flags;
 };
 
 class RuleData {
     WTF_MAKE_FAST_ALLOCATED;
 public:
     RuleData(StyleRule*, unsigned selectorIndex, unsigned position, AddRuleFlags);
 
     unsigned position() const { return m_position; }
     StyleRule* rule() const { return m_rule; }
-    const CSSSelector* selector() const { return m_rule->selectorList().selectorAt(m_selectorIndex); }
+    const CSSSelector& selector() const { return m_rule->selectorList().selectorAt(m_selectorIndex); }
     unsigned selectorIndex() const { return m_selectorIndex; }
 
     bool isLastInArray() const { return m_isLastInArray; }
     void setLastInArray(bool flag) { m_isLastInArray = flag; }
 
     bool hasFastCheckableSelector() const { return m_hasFastCheckableSelector; }
     bool hasMultipartSelector() const { return m_hasMultipartSelector; }
     bool hasRightmostSelectorMatchingHTMLBasedOnRuleHash() const { return m_hasRightmostSelectorMatchingHTMLBasedOnRuleHash; }
     bool containsUncommonAttributeSelector() const { return m_containsUncommonAttributeSelector; }
     unsigned specificity() const { return m_specificity; }
@@ skipping 88 matching lines @@
     }
 
     void addToRuleSet(StringImpl* key, PendingRuleMap&, const RuleData&);
     void addPageRule(StyleRulePage*);
     void addViewportRule(StyleRuleViewport*);
     void addFontFaceRule(StyleRuleFontFace*);
     void addKeyframesRule(StyleRuleKeyframes*);
     void addRegionRule(StyleRuleRegion*, bool hasDocumentSecurityOrigin);
 
     void addChildRules(const Vector<RefPtr<StyleRuleBase> >&, const MediaQueryEvaluator& medium, AddRuleFlags);
-    bool findBestRuleSetAndAdd(const CSSSelector*, RuleData&);
+    bool findBestRuleSetAndAdd(const CSSSelector&, RuleData&);
 
     void compactRules();
     static void compactPendingRules(PendingRuleMap&, CompactRuleMap&);
 
     struct PendingRuleMaps {
         PendingRuleMap idRules;
         PendingRuleMap classRules;
         PendingRuleMap tagRules;
         PendingRuleMap shadowPseudoElementRules;
     };
@@ skipping 23 matching lines @@
 
     MediaQueryResultList m_viewportDependentMediaQueryResults;
 
     unsigned m_ruleCount;
     OwnPtr<PendingRuleMaps> m_pendingRules;
 };
 
 } // namespace WebCore
 
 #endif // RuleSet_h