XSLImportRule should not be ResourceClient.

Source/core/xml/XSLStyleSheetLibxslt.cpp

 /*
  * This file is part of the XSL implementation.
  *
  * Copyright (C) 2004, 2005, 2006, 2008, 2012 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 32 matching lines @@
     , m_finalURL(finalURL)
     , m_isDisabled(false)
     , m_embedded(false)
     // Child sheets get marked as processed when the libxslt engine has finally
     // seen them.
     , m_processed(false)
     , m_stylesheetDoc(0)
     , m_stylesheetDocTaken(false)
     , m_compilationFailed(false)
     , m_parentStyleSheet(parentRule ? parentRule->parentStyleSheet() : 0)
+    , m_ownerDocument(nullptr)
 {
 }
 
 XSLStyleSheet::XSLStyleSheet(Node* parentNode, const String& originalURL, const KURL& finalURL,  bool embedded)
     : m_ownerNode(parentNode)
     , m_originalURL(originalURL)
     , m_finalURL(finalURL)
     , m_isDisabled(false)
     , m_embedded(embedded)
     , m_processed(true) // The root sheet starts off processed.
     , m_stylesheetDoc(0)
     , m_stylesheetDocTaken(false)
     , m_compilationFailed(false)
     , m_parentStyleSheet(nullptr)
+    , m_ownerDocument(nullptr)
 {
 }
 
+XSLStyleSheet::XSLStyleSheet(Document* ownerDocument, Node* styleSheetRootNode, const String& originalURL, const KURL& finalURL,  bool embedded)
+    : m_ownerNode(styleSheetRootNode)
+    , m_originalURL(originalURL)
+    , m_finalURL(finalURL)
+    , m_isDisabled(false)
+    , m_embedded(embedded)
+    , m_processed(true) // The root sheet starts off processed.
+    , m_stylesheetDoc(0)
+    , m_stylesheetDocTaken(false)
+    , m_compilationFailed(false)
+    , m_parentStyleSheet(nullptr)
+    , m_ownerDocument(ownerDocument)
+{
+}
+
 XSLStyleSheet::~XSLStyleSheet()
 {
     if (!m_stylesheetDocTaken)
         xmlFreeDoc(m_stylesheetDoc);
 #if !ENABLE(OILPAN)
     for (unsigned i = 0; i < m_children.size(); ++i) {
         ASSERT(m_children.at(i)->parentStyleSheet() == this);
         m_children.at(i)->setParentStyleSheet(0);
     }
 #endif
@@ skipping 167 matching lines @@
 }
 
 void XSLStyleSheet::setParentStyleSheet(XSLStyleSheet* parent)
 {
     m_parentStyleSheet = parent;
 }
 
 Document* XSLStyleSheet::ownerDocument()
 {
     for (XSLStyleSheet* styleSheet = this; styleSheet; styleSheet = styleSheet->parentStyleSheet()) {
+        if (styleSheet->m_ownerDocument)
+            return styleSheet->m_ownerDocument.get();
         Node* node = styleSheet->ownerNode();
         if (node)
             return &node->document();
     }
     return 0;
 }
 
 xmlDocPtr XSLStyleSheet::locateStylesheetSubResource(xmlDocPtr parentDoc, const xmlChar* uri)
 {
     bool matchedParent = (parentDoc == document());
@@ skipping 40 matching lines @@
 
 void XSLStyleSheet::trace(Visitor* visitor)
 {
     visitor->trace(m_ownerNode);
     visitor->trace(m_children);
     visitor->trace(m_parentStyleSheet);
     StyleSheet::trace(visitor);
 }
 
 } // namespace blink