Make importNode work when the XML document contains a CDATA section

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 878 matching lines @@
 {
     if (!importedNode) {
         exceptionState.throwDOMException(NotSupportedError, "The node provided is invalid.");
         return 0;
     }
 
     switch (importedNode->nodeType()) {
     case TEXT_NODE:
         return createTextNode(importedNode->nodeValue());
     case CDATA_SECTION_NODE:
-        return createCDATASection(importedNode->nodeValue(), exceptionState);
+        return importedNode->cloneNode(deep);

[adamk, 2014/02/19 17:04:59]

cloneNode alone can't be used to implement importNode, as the returned nodes may
have the wrong ownerDocument.

     case PROCESSING_INSTRUCTION_NODE:
         return createProcessingInstruction(importedNode->nodeName(), importedNode->nodeValue(), exceptionState);
     case COMMENT_NODE:
         return createComment(importedNode->nodeValue());
     case DOCUMENT_TYPE_NODE: {
         DocumentType* doctype = toDocumentType(importedNode);
         return DocumentType::create(this, doctype->name(), doctype->publicId(), doctype->systemId());
     }
     case ELEMENT_NODE: {
         Element* oldElement = toElement(importedNode);
@@ skipping 4551 matching lines @@
 void Document::defaultEventHandler(Event* event)
 {
     if (frame() && frame()->remotePlatformLayer()) {
         frame()->chromeClient().forwardInputEvent(this, event);
         return;
     }
     Node::defaultEventHandler(event);
 }
 
 } // namespace WebCore