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

Source/core/editing/FrameSelection.cpp

 /*
  * Copyright (C) 2004, 2008, 2009, 2010 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1718 matching lines @@
 
     LayoutRect selectionRect = renderView->selectionBounds(clipToVisibleContent);
     return clipToVisibleContent ? intersection(selectionRect, view->visibleContentRect()) : selectionRect;
 }
 
 // Scans logically forward from "start", including any child frames.
 static HTMLFormElement* scanForForm(Node* start)
 {
     if (!start)
         return 0;
-    Element* element = start->isElementNode() ? toElement(start) : ElementTraversal::next(start);
-    for (; element; element = ElementTraversal::next(element)) {
+    Element* element = start->isElementNode() ? toElement(start) : ElementTraversal::next(*start);
+    for (; element; element = ElementTraversal::next(*element)) {
         if (element->hasTagName(formTag))
             return toHTMLFormElement(element);
         if (element->isHTMLElement() && toHTMLElement(element)->isFormControlElement())
             return toHTMLFormControlElement(element)->form();
         if (element->hasTagName(frameTag) || element->hasTagName(iframeTag)) {
             Node* childDocument = toHTMLFrameElementBase(element)->contentDocument();
             if (HTMLFormElement* frameResult = scanForForm(childDocument))
                 return frameResult;
         }
     }
@@ skipping 52 matching lines @@
     // Put a caret inside the body if the entire frame is editable (either the
     // entire WebView is editable or designMode is on for this document).
 
     Document* document = m_frame->document();
     bool caretBrowsing = m_frame->settings() && m_frame->settings()->caretBrowsingEnabled();
     if (!isNone() || !(document->rendererIsEditable() || caretBrowsing))
         return;
 
     Node* node = document->documentElement();
     while (node && !node->hasTagName(bodyTag))
-        node = NodeTraversal::next(node);
+        node = NodeTraversal::next(*node);
     if (node)
         setSelection(VisibleSelection(firstPositionInOrBeforeNode(node), DOWNSTREAM));
 }
 
 bool FrameSelection::dispatchSelectStart()
 {
     Node* selectStartTarget = m_selection.extent().containerNode();
     if (!selectStartTarget)
         return true;
 
@@ skipping 32 matching lines @@
     sel.showTreeForThis();
 }
 
 void showTree(const WebCore::FrameSelection* sel)
 {
     if (sel)
         sel->showTreeForThis();
 }
 
 #endif