Pass around CSSSelector by reference instead of pointer

Source/core/dom/shadow/ElementShadow.cpp

 /*
  * 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.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 343 matching lines @@
 {
     if (!root.containsShadowRoots() && !root.containsContentElements())
         return;
 
     for (Element* element = ElementTraversal::firstWithin(root); element; element = ElementTraversal::next(*element, &root)) {
         if (ElementShadow* shadow = element->shadow())
             m_selectFeatures.add(shadow->ensureSelectFeatureSet());
         if (!element->hasTagName(HTMLNames::contentTag))
             continue;
         const CSSSelectorList& list = toHTMLContentElement(element)->selectorList();
-        for (const CSSSelector* selector = list.first(); selector; selector = CSSSelectorList::next(selector)) {
+        for (const CSSSelector* selector = list.first(); selector; selector = CSSSelectorList::next(*selector)) {
             for (const CSSSelector* component = selector; component; component = component->tagHistory())
-                m_selectFeatures.collectFeaturesFromSelector(component);
+                m_selectFeatures.collectFeaturesFromSelector(*component);
         }
     }
 }
 
 void ElementShadow::didAffectSelector(AffectedSelectorMask mask)
 {
     if (ensureSelectFeatureSet().hasSelectorFor(mask))
         setNeedsDistributionRecalc();
 }
 
 void ElementShadow::willAffectSelector()
 {
     for (ElementShadow* shadow = this; shadow; shadow = shadow->containingShadow()) {
         if (shadow->needsSelectFeatureSet())
             break;
         shadow->setNeedsSelectFeatureSet();
     }
     setNeedsDistributionRecalc();
 }
 
 void ElementShadow::clearDistribution()
 {
     m_nodeToInsertionPoints.clear();
 
     for (ShadowRoot* root = youngestShadowRoot(); root; root = root->olderShadowRoot())
         root->setShadowInsertionPointOfYoungerShadowRoot(0);
 }
 
 } // namespace