Oilpan: move platform speech objects to the heap.

Source/platform/speech/PlatformSpeechSynthesisUtterance.cpp

 /*
  * Copyright (C) 2013 Apple Computer, 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 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "platform/speech/PlatformSpeechSynthesisUtterance.h"
 
 namespace WebCore {
 
-PassRefPtr<PlatformSpeechSynthesisUtterance> PlatformSpeechSynthesisUtterance::create(PlatformSpeechSynthesisUtteranceClient* client)
+PlatformSpeechSynthesisUtterance* PlatformSpeechSynthesisUtterance::create(PlatformSpeechSynthesisUtteranceClient* client)
 {
-    return adoptRef(new PlatformSpeechSynthesisUtterance(client));
+    return new PlatformSpeechSynthesisUtterance(client);
 }
 
 PlatformSpeechSynthesisUtterance::PlatformSpeechSynthesisUtterance(PlatformSpeechSynthesisUtteranceClient* client)
     : m_client(client)
     , m_volume(1.0f)
     , m_rate(1.0f)
     , m_pitch(1.0f)
 {
 }
 
+void PlatformSpeechSynthesisUtterance::trace(Visitor* visitor)
+{
+    visitor->trace(m_client);
+    visitor->trace(m_voice);
+}
+
 } // namespace WebCore