Have ElementTraversal / NodeTraversal's next() methods take a reference

Source/core/inspector/InspectorDOMAgent.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * 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
@@ skipping 936 matching lines @@
     Vector<Document*> docs = documents();
     ListHashSet<Node*> resultCollector;
 
     for (Vector<Document*>::iterator it = docs.begin(); it != docs.end(); ++it) {
         Document* document = *it;
         Node* node = document->documentElement();
         if (!node)
             continue;
 
         // Manual plain text search.
-        while ((node = NodeTraversal::next(node, document->documentElement()))) {
+        while ((node = NodeTraversal::next(*node, document->documentElement()))) {
             switch (node->nodeType()) {
             case Node::TEXT_NODE:
             case Node::COMMENT_NODE:
             case Node::CDATA_SECTION_NODE: {
                 String text = node->nodeValue();
                 if (text.findIgnoringCase(whitespaceTrimmedQuery) != kNotFound)
                     resultCollector.add(node);
                 break;
             }
             case Node::ELEMENT_NODE: {
@@ skipping 1049 matching lines @@
     if (!m_documentNodeToIdMap.contains(m_document)) {
         RefPtr<TypeBuilder::DOM::Node> root;
         getDocument(errorString, root);
         return errorString->isEmpty();
     }
     return true;
 }
 
 } // namespace WebCore