Pass around CSSSelector by reference instead of pointer

Source/core/dom/shadow/SelectRuleFeatureSet.h

 /*
  * Copyright (C) 2012 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 24 matching lines @@
 #include "core/dom/Element.h"
 
 namespace WebCore {
 
 class SelectRuleFeatureSet {
 public:
     SelectRuleFeatureSet();
 
     void add(const SelectRuleFeatureSet&);
     void clear();
-    void collectFeaturesFromSelector(const CSSSelector*);
+    void collectFeaturesFromSelector(const CSSSelector&);
 
     bool hasSelectorForId(const AtomicString&) const;
     bool hasSelectorForClass(const AtomicString&) const;
     bool hasSelectorForAttribute(const AtomicString&) const;
 
     bool hasSelectorForChecked() const { return hasSelectorFor(AffectedSelectorChecked); }
     bool hasSelectorForEnabled() const { return hasSelectorFor(AffectedSelectorEnabled); }
     bool hasSelectorForDisabled() const { return hasSelectorFor(AffectedSelectorDisabled); }
     bool hasSelectorForIndeterminate() const { return hasSelectorFor(AffectedSelectorIndeterminate); }
     bool hasSelectorForLink() const { return hasSelectorFor(AffectedSelectorLink); }
@@ skipping 23 matching lines @@
 
 inline bool SelectRuleFeatureSet::hasSelectorForAttribute(const AtomicString& attributeName) const
 {
     ASSERT(!attributeName.isEmpty());
     return m_cssRuleFeatureSet.hasSelectorForAttribute(attributeName);
 }
 
 }
 
 #endif