Oilpan: Replace RefPtrs to Node and its subclasses in core/loader with Oilpan transition types.

Source/core/loader/DocumentLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 756 matching lines @@
         mainResourceLoader()->attachThreadedDataReceiver(threadedDataReceiver);
 }
 
 void DocumentLoader::endWriting(DocumentWriter* writer)
 {
     ASSERT_UNUSED(writer, m_writer == writer);
     m_writer->end();
     m_writer.clear();
 }
 
-PassRefPtr<DocumentWriter> DocumentLoader::createWriterFor(LocalFrame* frame, const Document* ownerDocument, const KURL& url, const AtomicString& mimeType, const AtomicString& encoding, bool userChosen, bool dispatch)
+PassRefPtrWillBeRawPtr<DocumentWriter> DocumentLoader::createWriterFor(LocalFrame* frame, const Document* ownerDocument, const KURL& url, const AtomicString& mimeType, const AtomicString& encoding, bool userChosen, bool dispatch)
 {
     // Create a new document before clearing the frame, because it may need to
     // inherit an aliased security context.
     DocumentInit init(url, frame);
     init.withNewRegistrationContext();
 
     // In some rare cases, we'll re-used a DOMWindow for a new Document. For example,
     // when a script calls window.open("..."), the browser gives JavaScript a window
     // synchronously but kicks off the load in the window asynchronously. Web sites
     // expect that modifications that they make to the window object synchronously
     // won't be blown away when the network load commits. To make that happen, we
     // "securely transition" the existing DOMWindow to the Document that results from
     // the network load. See also SecurityContext::isSecureTransitionTo.
     bool shouldReuseDefaultView = frame->loader().stateMachine()->isDisplayingInitialEmptyDocument() && frame->document()->isSecureTransitionTo(url);
 
     frame->loader().clear();
 
     if (frame->document())
         frame->document()->prepareForDestruction();
 
     if (!shouldReuseDefaultView)
         frame->setDOMWindow(DOMWindow::create(*frame));
 
-    RefPtr<Document> document = frame->domWindow()->installNewDocument(mimeType, init);
+    RefPtrWillBeRawPtr<Document> document = frame->domWindow()->installNewDocument(mimeType, init);
     if (ownerDocument) {
         document->setCookieURL(ownerDocument->cookieURL());
         document->setSecurityOrigin(ownerDocument->securityOrigin());
     }
 
     frame->loader().didBeginDocument(dispatch);
 
     return DocumentWriter::create(document.get(), mimeType, encoding, userChosen);
 }
 
@@ skipping 16 matching lines @@
 void DocumentLoader::replaceDocument(const String& source, Document* ownerDocument)
 {
     m_frame->loader().stopAllLoaders();
     m_writer = createWriterFor(m_frame, ownerDocument, m_frame->document()->url(), mimeType(), m_writer ? m_writer->encoding() : emptyAtom,  m_writer ? m_writer->encodingWasChosenByUser() : false, true);
     if (!source.isNull())
         m_writer->appendReplacingData(source);
     endWriting(m_writer.get());
 }
 
 } // namespace WebCore