Fix virtual/override/final usage in Source/core/html/.

Source/core/html/parser/HTMLDocumentParser.cpp

 /*
  * Copyright (C) 2010 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 74 matching lines @@
 
 class ParserDataReceiver final : public RefCountedWillBeGarbageCollectedFinalized<ParserDataReceiver>, public ThreadedDataReceiver, public DocumentLifecycleObserver {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(ParserDataReceiver);
 public:
     static PassRefPtrWillBeRawPtr<ParserDataReceiver> create(WeakPtr<BackgroundHTMLParser> backgroundParser, Document* document)
     {
         return adoptRefWillBeNoop(new ParserDataReceiver(backgroundParser, document));
     }
 
 #if !ENABLE(OILPAN)
-    virtual void ref() override { RefCounted<ParserDataReceiver>::ref(); }
-    virtual void deref() override { RefCounted<ParserDataReceiver>::deref(); }
+    void ref() override { RefCounted<ParserDataReceiver>::ref(); }
+    void deref() override { RefCounted<ParserDataReceiver>::deref(); }
 #endif
 
     // ThreadedDataReceiver
     void acceptData(const char* data, int dataLength) override
     {
         ASSERT(backgroundThread() && backgroundThread()->isCurrentThread());
         if (m_backgroundParser.get())
             m_backgroundParser.get()->appendRawBytesFromParserThread(data, dataLength);
     }
 
@@ skipping 1007 matching lines @@
 void HTMLDocumentParser::setDecoder(PassOwnPtr<TextResourceDecoder> decoder)
 {
     ASSERT(decoder);
     DecodedDataDocumentParser::setDecoder(decoder);
 
     if (m_haveBackgroundParser)
         HTMLParserThread::shared()->postTask(threadSafeBind(&BackgroundHTMLParser::setDecoder, AllowCrossThreadAccess(m_backgroundParser), takeDecoder()));
 }
 
 }