Oilpan: move platform speech objects to the heap.

Source/modules/speech/SpeechSynthesisVoice.h

Index: Source/modules/speech/SpeechSynthesisVoice.h
diff --git a/Source/modules/speech/SpeechSynthesisVoice.h b/Source/modules/speech/SpeechSynthesisVoice.h
index 81c82324dc90e7dde3baab0103b0a6a9b4e6747f..b3bdb20fc8e237acc862af87988a02aba7ed2486 100644
--- a/Source/modules/speech/SpeechSynthesisVoice.h
+++ b/Source/modules/speech/SpeechSynthesisVoice.h
@@ -29,15 +29,13 @@
 #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(); }
@@ -45,14 +43,14 @@ public:
     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