Move PlatformSpeechSynthesisVoice off the heap.

third_party/WebKit/Source/platform/speech/PlatformSpeechSynthesizer.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 42 matching lines @@
 }
 
 void PlatformSpeechSynthesizer::speak(PlatformSpeechSynthesisUtterance* utterance)
 {
     if (m_webSpeechSynthesizer && m_webSpeechSynthesizerClient)
         m_webSpeechSynthesizer->speak(WebSpeechSynthesisUtterance(utterance));
 }
 
 void PlatformSpeechSynthesizer::pause()
 {
-    if (m_webSpeechSynthesizer.get())
+    if (m_webSpeechSynthesizer)
         m_webSpeechSynthesizer->pause();
 }
 
 void PlatformSpeechSynthesizer::resume()
 {
-    if (m_webSpeechSynthesizer.get())
+    if (m_webSpeechSynthesizer)
         m_webSpeechSynthesizer->resume();
 }
 
 void PlatformSpeechSynthesizer::cancel()
 {
-    if (m_webSpeechSynthesizer.get())
+    if (m_webSpeechSynthesizer)
         m_webSpeechSynthesizer->cancel();
 }
 
-void PlatformSpeechSynthesizer::setVoiceList(HeapVector<Member<PlatformSpeechSynthesisVoice>>& voices)
+void PlatformSpeechSynthesizer::setVoiceList(Vector<RefPtr<PlatformSpeechSynthesisVoice>>& voices)
 {
     m_voiceList = voices;
 }
 
 void PlatformSpeechSynthesizer::initializeVoiceList()
 {
-    if (m_webSpeechSynthesizer.get())
+    if (m_webSpeechSynthesizer)
         m_webSpeechSynthesizer->updateVoiceList();
 }
 
 DEFINE_TRACE(PlatformSpeechSynthesizer)
 {
     visitor->trace(m_speechSynthesizerClient);
-    visitor->trace(m_voiceList);
     visitor->trace(m_webSpeechSynthesizerClient);
 }
 
 } // namespace blink