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

Source/core/loader/DocumentWriter.cpp

 /*
  * Copyright (C) 2010. Adam Barth. 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.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 26 matching lines @@
 #include "core/frame/DOMWindow.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
 
-PassRefPtr<DocumentWriter> DocumentWriter::create(Document* document, const AtomicString& mimeType, const AtomicString& encoding, bool encodingUserChoosen)
+PassRefPtrWillBeRawPtr<DocumentWriter> DocumentWriter::create(Document* document, const AtomicString& mimeType, const AtomicString& encoding, bool encodingUserChoosen)
 {
-    return adoptRef(new DocumentWriter(document, mimeType, encoding, encodingUserChoosen));
+    return adoptRefWillBeNoop(new DocumentWriter(document, mimeType, encoding, encodingUserChoosen));
 }
 
 DocumentWriter::DocumentWriter(Document* document, const AtomicString& mimeType, const AtomicString& encoding, bool encodingUserChoosen)
     : m_document(document)
     , m_decoderBuilder(mimeType, encoding, encodingUserChoosen)
     // We grab a reference to the parser so that we'll always send data to the
     // original parser, even if the document acquires a new parser (e.g., via
     // document.open).
     , m_parser(m_document->implicitOpen())
 {
     if (m_document->frame()) {
         if (FrameView* view = m_document->frame()->view())
             view->setContentsSize(IntSize());
     }
 }
 
 DocumentWriter::~DocumentWriter()
 {
 }
 
+void DocumentWriter::trace(Visitor* visitor)
+{
+    visitor->trace(m_document);
+    visitor->trace(m_parser);
+}
+
 void DocumentWriter::appendReplacingData(const String& source)
 {
     m_document->setCompatibilityMode(Document::NoQuirksMode);
 
     // FIXME: This should call DocumentParser::appendBytes instead of append
     // to support RawDataDocumentParsers.
     if (DocumentParser* parser = m_document->parser()) {
         parser->pinToMainThread();
         // Because we're pinned to the main thread we don't need to worry about
         // passing ownership of the source string.
         parser->append(source.impl());
     }
 }
 
 void DocumentWriter::addData(const char* bytes, size_t length)
 {
     ASSERT(m_parser);
     if (m_parser->needsDecoder() && 0 < length) {
         OwnPtr<TextResourceDecoder> decoder = m_decoderBuilder.buildFor(m_document);
         m_parser->setDecoder(decoder.release());
     }
     // appendBytes() can result replacing DocumentLoader::m_writer.
-    RefPtr<DocumentWriter> protectingThis(this);
+    RefPtrWillBeRawPtr<DocumentWriter> protectingThis(this);
     m_parser->appendBytes(bytes, length);
 }
 
 void DocumentWriter::end()
 {
     ASSERT(m_document);
 
     // http://bugs.webkit.org/show_bug.cgi?id=10854
     // The frame's last ref may be removed and it can be deleted by checkCompleted(),
     // so we'll add a protective refcount
     RefPtr<LocalFrame> protector(m_document->frame());
 
     if (!m_parser)
         return;
 
     if (m_parser->needsDecoder()) {
         OwnPtr<TextResourceDecoder> decoder = m_decoderBuilder.buildFor(m_document);
         m_parser->setDecoder(decoder.release());
     }
     // flush() can result replacing DocumentLoader::m_writer.
-    RefPtr<DocumentWriter> protectingThis(this);
+    RefPtrWillBeRawPtr<DocumentWriter> protectingThis(this);
     m_parser->flush();
 
     if (!m_parser)
         return;
 
     m_parser->finish();
     m_parser = nullptr;
-    m_document = 0;
+    m_document = nullptr;
 }
 
 void DocumentWriter::setUserChosenEncoding(const String& charset)
 {
     TextResourceDecoder* decoder = m_parser->decoder();
     if (decoder)
         decoder->setEncoding(charset, TextResourceDecoder::UserChosenEncoding);
 }
 
 void DocumentWriter::setDocumentWasLoadedAsPartOfNavigation()
 {
     ASSERT(m_parser && !m_parser->isStopped());
     m_parser->setDocumentWasLoadedAsPartOfNavigation();
 }
 
 } // namespace WebCore