Revert 78366 - Revert 78101 - Merge r76728, crbug 68263

WebCore/xml/XSLStyleSheetQt.cpp

 /*
  * This file is part of the XSL implementation.
  *
  * Copyright (C) 2009 Jakub Wieczorek <faw217@gmail.com>
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 17 matching lines @@
 #include "Document.h"
 #include "Node.h"
 #include "NotImplemented.h"
 #include "XSLTProcessor.h"
 #include "loader.h"
 
 namespace WebCore {
 
 XSLStyleSheet::XSLStyleSheet(Node* parentNode, const String& originalURL, const KURL& finalURL,  bool embedded)
     : StyleSheet(parentNode, originalURL, finalURL)
-    , m_ownerDocument(parentNode->document())
     , m_embedded(embedded)
 {
 }
 
 XSLStyleSheet::~XSLStyleSheet()
 {
 }
 
 bool XSLStyleSheet::isLoading()
 {
     notImplemented();
     return false;
 }
 
 void XSLStyleSheet::checkLoaded()
 {
     if (ownerNode())
         ownerNode()->sheetLoaded();
 }
 
 void XSLStyleSheet::clearDocuments()
 {
     notImplemented();
 }
 
 CachedResourceLoader* XSLStyleSheet::cachedResourceLoader()
 {
-    if (!m_ownerDocument)
+    Document* document = ownerDocument();
+    if (!document)
         return 0;
-    return m_ownerDocument->cachedResourceLoader();
+    return document->cachedResourceLoader();
 }
 
 bool XSLStyleSheet::parseString(const String& string, bool)
 {
     // FIXME: Fix QXmlQuery so that it allows compiling the stylesheet before setting the document
     // to be transformed. This way we could not only check if the stylesheet is correct before using it
     // but also turn XSLStyleSheet::sheetString() into XSLStyleSheet::query() that returns a QXmlQuery.
 
     m_sheetString = string;
     return !m_sheetString.isEmpty();
 }
 
 void XSLStyleSheet::loadChildSheets()
 {
     notImplemented();
 }
 
 void XSLStyleSheet::loadChildSheet(const String&)
 {
     notImplemented();
 }
 
+Document* XSLStyleSheet::ownerDocument()
+{
+    Node* node = ownerNode();
+    return node ? node->document() : 0;
+}
+
 void XSLStyleSheet::setParentStyleSheet(XSLStyleSheet*)
 {
     notImplemented();
 }
 
 void XSLStyleSheet::markAsProcessed()
 {
     notImplemented();
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(XSLT)