Revert of Move speech module over to Oilpan.

Source/modules/speech/SpeechGrammarList.cpp

Index: Source/modules/speech/SpeechGrammarList.cpp
diff --git a/Source/modules/speech/SpeechGrammarList.cpp b/Source/modules/speech/SpeechGrammarList.cpp
index 6a0140032710392121d5bdfa8c00b5b95535d409..6dfe69ee483197a8d7472c6ab3988c8f7f10ae27 100644
--- a/Source/modules/speech/SpeechGrammarList.cpp
+++ b/Source/modules/speech/SpeechGrammarList.cpp
@@ -31,11 +31,9 @@
 
 namespace WebCore {
 
-DEFINE_GC_INFO(SpeechGrammarList);
-
-PassRefPtrWillBeRawPtr<SpeechGrammarList> SpeechGrammarList::create()
+PassRefPtr<SpeechGrammarList> SpeechGrammarList::create()
 {
-    return adoptRefWillBeNoop(new SpeechGrammarList);
+    return adoptRef(new SpeechGrammarList);
 }
 
 SpeechGrammar* SpeechGrammarList::item(unsigned long index) const
@@ -63,9 +61,4 @@
     ScriptWrappable::init(this);
 }
 
-void SpeechGrammarList::trace(Visitor* visitor)
-{
-    visitor->trace(m_grammars);
-}
-
 } // namespace WebCore