Turn DocumentParser::pinToMainThread into a cleaner api

Source/core/loader/DocumentWriter.h

 /*
  * 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 11 matching lines @@
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef DocumentWriter_h
 #define DocumentWriter_h
 
+#include "core/html/parser/ParserSynchronizationPolicy.h"
 #include "core/loader/TextResourceDecoderBuilder.h"
 #include "platform/heap/Handle.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class Document;
 class DocumentParser;
 
 class DocumentWriter : public RefCountedWillBeGarbageCollectedFinalized<DocumentWriter> {
     WTF_MAKE_NONCOPYABLE(DocumentWriter);
 public:
-    static PassRefPtrWillBeRawPtr<DocumentWriter> create(Document*, const AtomicString& mimeType = emptyAtom, const AtomicString& encoding = emptyAtom);
+    static PassRefPtrWillBeRawPtr<DocumentWriter> create(Document*, ParserSynchronizationPolicy, const AtomicString& mimeType = emptyAtom, const AtomicString& encoding = emptyAtom);
 
     ~DocumentWriter();
     void trace(Visitor*);
 
     void end();
 
-    void forceSynchronousParse();
     void addData(const char* bytes, size_t length);
 
     const AtomicString& mimeType() const { return m_decoderBuilder.mimeType(); }
     const AtomicString& encoding() const { return m_decoderBuilder.encoding(); }
 
     // Exposed for DocumentLoader::replaceDocumentWhileExecutingJavaScriptURL.
     void appendReplacingData(const String&);
 
     void setUserChosenEncoding(const String& charset);
 
     void setDocumentWasLoadedAsPartOfNavigation();
 
 private:
-    DocumentWriter(Document*, const AtomicString& mimeType, const AtomicString& encoding);
+    DocumentWriter(Document*, ParserSynchronizationPolicy, const AtomicString& mimeType, const AtomicString& encoding);
 
     RawPtrWillBeMember<Document> m_document;
     TextResourceDecoderBuilder m_decoderBuilder;
 
     RefPtrWillBeMember<DocumentParser> m_parser;
     bool m_forcedSynchronousParse;
 };
 
 } // namespace blink
 
 #endif // DocumentWriter_h