Revert 78366 - Revert 78101 - Merge r76728, crbug 68263

WebCore/xml/XSLStyleSheetQt.cpp

Index: WebCore/xml/XSLStyleSheetQt.cpp
===================================================================
--- WebCore/xml/XSLStyleSheetQt.cpp	(revision 78377)
+++ WebCore/xml/XSLStyleSheetQt.cpp	(working copy)
@@ -35,7 +35,6 @@
 
 XSLStyleSheet::XSLStyleSheet(Node* parentNode, const String& originalURL, const KURL& finalURL,  bool embedded)
     : StyleSheet(parentNode, originalURL, finalURL)
-    , m_ownerDocument(parentNode->document())
     , m_embedded(embedded)
 {
 }
@@ -63,9 +62,10 @@
 
 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)
@@ -88,6 +88,12 @@
     notImplemented();
 }
 
+Document* XSLStyleSheet::ownerDocument()
+{
+    Node* node = ownerNode();
+    return node ? node->document() : 0;
+}
+
 void XSLStyleSheet::setParentStyleSheet(XSLStyleSheet*)
 {
     notImplemented();