Use TreeScope::completeURL and baseURL instead of the Document versions

Source/core/html/HTMLBodyElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann (hausmann@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 50 matching lines @@
     if (name == backgroundAttr || name == marginwidthAttr || name == leftmarginAttr || name == marginheightAttr || name == topmarginAttr || name == bgcolorAttr || name == textAttr || name == bgpropertiesAttr)
         return true;
     return HTMLElement::isPresentationAttribute(name);
 }
 
 void HTMLBodyElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style)
 {
     if (name == backgroundAttr) {
         String url = stripLeadingAndTrailingHTMLSpaces(value);
         if (!url.isEmpty()) {
-            RefPtr<CSSImageValue> imageValue = CSSImageValue::create(document().completeURL(url));
+            RefPtr<CSSImageValue> imageValue = CSSImageValue::create(treeScope().completeURL(url));
             imageValue->setInitiator(localName());
             style->setProperty(CSSProperty(CSSPropertyBackgroundImage, imageValue.release()));
         }
     } else if (name == marginwidthAttr || name == leftmarginAttr) {
         addHTMLLengthToStyle(style, CSSPropertyMarginRight, value);
         addHTMLLengthToStyle(style, CSSPropertyMarginLeft, value);
     } else if (name == marginheightAttr || name == topmarginAttr) {
         addHTMLLengthToStyle(style, CSSPropertyMarginBottom, value);
         addHTMLLengthToStyle(style, CSSPropertyMarginTop, value);
     } else if (name == bgcolorAttr) {
@@ skipping 198 matching lines @@
 int HTMLBodyElement::scrollWidth()
 {
     // Update the document's layout.
     Document& document = this->document();
     document.updateLayoutIgnorePendingStylesheets();
     FrameView* view = document.view();
     return view ? adjustForZoom(view->contentsWidth(), &document) : 0;
 }
 
 } // namespace WebCore