Oilpan: move platform speech objects to the heap.

Source/platform/speech/PlatformSpeechSynthesisVoice.cpp

Index: Source/platform/speech/PlatformSpeechSynthesisVoice.cpp
diff --git a/Source/platform/speech/PlatformSpeechSynthesisVoice.cpp b/Source/platform/speech/PlatformSpeechSynthesisVoice.cpp
index a260dc8088a840422242b05b0c1964be00bb22e9..9550f91e3a3a316c1a5091f8884236674928981f 100644
--- a/Source/platform/speech/PlatformSpeechSynthesisVoice.cpp
+++ b/Source/platform/speech/PlatformSpeechSynthesisVoice.cpp
@@ -28,14 +28,14 @@
 
 namespace WebCore {
 
-PassRefPtr<PlatformSpeechSynthesisVoice> PlatformSpeechSynthesisVoice::create(const String& voiceURI, const String& name, const String& lang, bool localService, bool isDefault)
+PlatformSpeechSynthesisVoice* PlatformSpeechSynthesisVoice::create(const String& voiceURI, const String& name, const String& lang, bool localService, bool isDefault)
 {
-    return adoptRef(new PlatformSpeechSynthesisVoice(voiceURI, name, lang, localService, isDefault));
+    return new PlatformSpeechSynthesisVoice(voiceURI, name, lang, localService, isDefault);
 }
 
-PassRefPtr<PlatformSpeechSynthesisVoice> PlatformSpeechSynthesisVoice::create()
+PlatformSpeechSynthesisVoice* PlatformSpeechSynthesisVoice::create()
 {
-    return adoptRef(new PlatformSpeechSynthesisVoice());
+    return new PlatformSpeechSynthesisVoice();
 }
 
 PlatformSpeechSynthesisVoice::PlatformSpeechSynthesisVoice(const String& voiceURI, const String& name, const String& lang, bool localService, bool isDefault)