[WIP]Add WebPrivateHeapPtr and use it for speech platform layer.

Source/web/WebSpeechInputResult.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
@@ skipping 20 matching lines @@
 #include "core/speech/SpeechInputResult.h"
 #include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 void WebSpeechInputResult::reset()
 {
     m_private.reset();
 }
 
-WebSpeechInputResult::WebSpeechInputResult(const PassRefPtr<WebCore::SpeechInputResult>& value)
+WebSpeechInputResult::WebSpeechInputResult(const PassRefPtrWillBeRawPtr<WebCore::SpeechInputResult>& value)
     : m_private(value)
 {
 }
 
 void WebSpeechInputResult::assign(const WebString& utterance, double confidence)
 {
     m_private = WebCore::SpeechInputResult::create(utterance, confidence);
 }
 
 void WebSpeechInputResult::assign(const WebSpeechInputResult& other)
 {
     m_private = WebCore::SpeechInputResult::create(*other.m_private.get());
 }
 
-WebSpeechInputResult::operator PassRefPtr<WebCore::SpeechInputResult>() const
+WebSpeechInputResult::operator PassRefPtrWillBeRawPtr<WebCore::SpeechInputResult>() const
 {
     return m_private.get();
 }
 
 } // namespace blink
 
 #endif // ENABLE(INPUT_SPEECH)