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

public/web/WebSpeechInputResult.h

Index: public/web/WebSpeechInputResult.h
diff --git a/public/web/WebSpeechInputResult.h b/public/web/WebSpeechInputResult.h
index 2222690eb538ca8144d0eed5556e9e27f8e5434b..9b335f4318444060b385dc300c54b7dfcf9f9745 100644
--- a/public/web/WebSpeechInputResult.h
+++ b/public/web/WebSpeechInputResult.h
@@ -27,7 +27,7 @@
 #define WebSpeechInputResult_h
 
 #include "../platform/WebCommon.h"
-#include "../platform/WebPrivatePtr.h"
+#include "../platform/WebPrivateHeapPtr.h"
 #include "../platform/WebString.h"
 #include "../platform/WebVector.h"
 
@@ -56,12 +56,12 @@ public:
     BLINK_EXPORT void reset();
 
 #if BLINK_IMPLEMENTATION
-    WebSpeechInputResult(const WTF::PassRefPtr<WebCore::SpeechInputResult>&);
-    operator WTF::PassRefPtr<WebCore::SpeechInputResult>() const;
+    WebSpeechInputResult(const WTF::PassRefPtrWillBeRawPtr<WebCore::SpeechInputResult>&);
+    operator WTF::PassRefPtrWillBeRawPtr<WebCore::SpeechInputResult>() const;
 #endif
 
 private:
-    WebPrivatePtr<WebCore::SpeechInputResult> m_private;
+    WebPrivateHeapPtr<WebCore::SpeechInputResult> m_private;
 };
 
 typedef WebVector<WebSpeechInputResult> WebSpeechInputResultArray;