Have ElementTraversal::firstWithin() take a reference

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 657 matching lines @@
     if (!frame())
         return 0;
 
     return domWindow()->location();
 }
 
 void Document::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
 {
     ContainerNode::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
 
-    Element* newDocumentElement = ElementTraversal::firstWithin(this);
+    Element* newDocumentElement = ElementTraversal::firstWithin(*this);
     if (newDocumentElement == m_documentElement)
         return;
     m_documentElement = newDocumentElement;
     // The root style used for media query matching depends on the document element.
     clearStyleResolver();
 }
 
 PassRefPtr<Element> Document::createElement(const AtomicString& name, ExceptionState& es)
 {
     if (!isValidName(name)) {
@@ skipping 1977 matching lines @@
         ASSERT(!m_elemSheet->contents()->ruleCount());
         bool usesRemUnits = m_elemSheet->contents()->usesRemUnits();
         m_elemSheet = CSSStyleSheet::createInline(this, m_baseURL);
         // FIXME: So we are not really the parser. The right fix is to eliminate the element sheet completely.
         m_elemSheet->contents()->parserSetUsesRemUnits(usesRemUnits);
     }
 
     if (!equalIgnoringFragmentIdentifier(oldBaseURL, m_baseURL)) {
         // Base URL change changes any relative visited links.
         // FIXME: There are other URLs in the tree that would need to be re-evaluated on dynamic base URL change. Style should be invalidated too.
-        for (Element* element = ElementTraversal::firstWithin(this); element; element = ElementTraversal::next(*element)) {
+        for (Element* element = ElementTraversal::firstWithin(*this); element; element = ElementTraversal::next(*element)) {
             if (isHTMLAnchorElement(element))
                 toHTMLAnchorElement(element)->invalidateCachedVisitedLinkHash();
         }
     }
 }
 
 void Document::setBaseURLOverride(const KURL& url)
 {
     m_baseURLOverride = url;
     updateBaseURL();
 }
 
 void Document::processBaseElement()
 {
     // Find the first href attribute in a base element and the first target attribute in a base element.
     const AtomicString* href = 0;
     const AtomicString* target = 0;
-    for (Element* element = ElementTraversal::firstWithin(this); element && (!href || !target); element = ElementTraversal::next(*element)) {
+    for (Element* element = ElementTraversal::firstWithin(*this); element && (!href || !target); element = ElementTraversal::next(*element)) {
         if (element->hasTagName(baseTag)) {
             if (!href) {
                 const AtomicString& value = element->fastGetAttribute(hrefAttr);
                 if (!value.isNull())
                     href = &value;
             }
             if (!target) {
                 const AtomicString& value = element->fastGetAttribute(targetAttr);
                 if (!value.isNull())
                     target = &value;
@@ skipping 2518 matching lines @@
 void Document::modifiedStyleSheet(StyleSheet* sheet, RecalcStyleTime when, StyleResolverUpdateMode updateMode)
 {
     if (!isActive())
         return;
 
     styleEngine()->modifiedStyleSheet(sheet);
     styleResolverChanged(when, updateMode);
 }
 
 } // namespace WebCore