Clean up ShadowRootRareData, ShadowRoot and SlotAssignment

third_party/WebKit/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 216 matching lines @@
 }
 
 bool ElementShadow::hasSameStyles(const ElementShadow* other) const
 {
     ShadowRoot* root = &youngestShadowRoot();
     ShadowRoot* otherRoot = &other->youngestShadowRoot();
     while (root || otherRoot) {
         if (!root || !otherRoot)
             return false;
 
-        StyleSheetList* list = root->styleSheets();
-        StyleSheetList* otherList = otherRoot->styleSheets();
+        StyleSheetList& list = root->styleSheets();
+        StyleSheetList& otherList = otherRoot->styleSheets();
 
-        if (list->length() != otherList->length())
+        if (list.length() != otherList.length())
             return false;
 
-        for (size_t i = 0; i < list->length(); i++) {
-            if (toCSSStyleSheet(list->item(i))->contents() != toCSSStyleSheet(otherList->item(i))->contents())
+        for (size_t i = 0; i < list.length(); i++) {
+            if (toCSSStyleSheet(list.item(i))->contents() != toCSSStyleSheet(otherList.item(i))->contents())
                 return false;
         }
         root = root->olderShadowRoot();
         otherRoot = otherRoot->olderShadowRoot();
     }
 
     return true;
 }
 
 const InsertionPoint* ElementShadow::finalDestinationInsertionPointFor(const Node* key) const
@@ skipping 121 matching lines @@
 }
 
 DEFINE_TRACE(ElementShadow)
 {
     visitor->trace(m_nodeToInsertionPoints);
     visitor->trace(m_selectFeatures);
     visitor->trace(m_shadowRoot);
 }
 
 } // namespace blink