Oilpan: move platform speech objects to the heap.

Source/modules/speech/SpeechSynthesisVoice.h

 /*
  * Copyright (C) 2013 Apple 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 11 matching lines @@
  * (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 SpeechSynthesisVoice_h
 #define SpeechSynthesisVoice_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "platform/heap/Handle.h"
 #include "platform/speech/PlatformSpeechSynthesisVoice.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class SpeechSynthesisVoice FINAL : public GarbageCollectedFinalized<SpeechSynthesisVoice>, public ScriptWrappable {
 public:
-    static SpeechSynthesisVoice* create(PassRefPtr<PlatformSpeechSynthesisVoice>);
+    static SpeechSynthesisVoice* create(PlatformSpeechSynthesisVoice*);
 
     const String& voiceURI() const { return m_platformVoice->voiceURI(); }
     const String& name() const { return m_platformVoice->name(); }
     const String& lang() const { return m_platformVoice->lang(); }
     bool localService() const { return m_platformVoice->localService(); }
     bool isDefault() const { return m_platformVoice->isDefault(); }
 
-    PlatformSpeechSynthesisVoice* platformVoice() const { return m_platformVoice.get(); }
+    PlatformSpeechSynthesisVoice* platformVoice() const { return m_platformVoice; }
 
-    void trace(Visitor*) { }
+    void trace(Visitor*);
 
 private:
-    explicit SpeechSynthesisVoice(PassRefPtr<PlatformSpeechSynthesisVoice>);
+    explicit SpeechSynthesisVoice(PlatformSpeechSynthesisVoice*);
 
-    RefPtr<PlatformSpeechSynthesisVoice> m_platformVoice;
+    Member<PlatformSpeechSynthesisVoice> m_platformVoice;
 };
 
 } // namespace WebCore
 
 #endif // SpeechSynthesisVoice_h