Add doctype declarations when using PageSerializer

Source/core/page/PageSerializer.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 97 matching lines @@
 private:
     PageSerializer* m_serializer;
     Document* m_document;
 };
 
 SerializerMarkupAccumulator::SerializerMarkupAccumulator(PageSerializer* serializer, Document* document, Vector<Node*>* nodes)
     : MarkupAccumulator(nodes, ResolveAllURLs)
     , m_serializer(serializer)
     , m_document(document)
 {
-    // MarkupAccumulator does not serialize the <?xml ... line, so we add it explicitely to ensure the right encoding is specified.
-    if (m_document->isXHTMLDocument() || m_document->xmlStandalone() || m_document->isSVGDocument())
-        appendString("<?xml version=\"" + m_document->xmlVersion() + "\" encoding=\"" + m_document->charset() + "\"?>");
 }
 
 SerializerMarkupAccumulator::~SerializerMarkupAccumulator()
 {
 }
 
 void SerializerMarkupAccumulator::appendText(StringBuilder& out, Text* text)
 {
     Element* parent = text->parentElement();
     if (parent && !shouldIgnoreElement(parent))
@@ skipping 67 matching lines @@
     }
 
     Vector<Node*> nodes;
     SerializerMarkupAccumulator accumulator(this, document, &nodes);
     WTF::TextEncoding textEncoding(document->charset());
     CString data;
     if (!textEncoding.isValid()) {
         // FIXME: iframes used as images trigger this. We should deal with them correctly.
         return;
     }
-    String text = accumulator.serializeNodes(document->documentElement(), IncludeNode);
+    String text = accumulator.serializeNodes(document, IncludeNode);
     CString frameHTML = textEncoding.normalizeAndEncode(text, WTF::EntitiesForUnencodables);
     m_resources->append(SerializedResource(url, document->suggestedMIMEType(), SharedBuffer::create(frameHTML.data(), frameHTML.length())));
     m_resourceURLs.add(url);
 
     for (Vector<Node*>::iterator iter = nodes.begin(); iter != nodes.end(); ++iter) {
         Node* node = *iter;
         if (!node->isElementNode())
             continue;
 
         Element* element = toElement(node);
@@ skipping 127 matching lines @@
     if (iter != m_blankFrameURLs.end())
         return iter->value;
     String url = "wyciwyg://frame/" + String::number(m_blankFrameCounter++);
     KURL fakeURL(ParsedURLString, url);
     m_blankFrameURLs.add(frame, fakeURL);
 
     return fakeURL;
 }
 
 }