[WIP]Add WebPrivateHeapPtr and use it for speech platform layer.

Source/core/speech/SpeechInputResult.cpp

Index: Source/core/speech/SpeechInputResult.cpp
diff --git a/Source/core/speech/SpeechInputResult.cpp b/Source/core/speech/SpeechInputResult.cpp
index 1673455fe4be00dd758c6f4c8c1075f95a9fa0a6..36bcca51f5b6d4ac6b936456c0f8d94d099f876b 100644
--- a/Source/core/speech/SpeechInputResult.cpp
+++ b/Source/core/speech/SpeechInputResult.cpp
@@ -30,14 +30,16 @@
 
 namespace WebCore {
 
-PassRefPtr<SpeechInputResult> SpeechInputResult::create(const String& utterance, double confidence)
+DEFINE_GC_INFO(SpeechInputResult);
+
+PassRefPtrWillBeRawPtr<SpeechInputResult> SpeechInputResult::create(const String& utterance, double confidence)
 {
-    return adoptRef(new SpeechInputResult(utterance, confidence));
+    return adoptRefWillBeNoop(new SpeechInputResult(utterance, confidence));
 }
 
-PassRefPtr<SpeechInputResult> SpeechInputResult::create(const SpeechInputResult& source)
+PassRefPtrWillBeRawPtr<SpeechInputResult> SpeechInputResult::create(const SpeechInputResult& source)
 {
-    return adoptRef(new SpeechInputResult(source.m_utterance, source.m_confidence));
+    return adoptRefWillBeNoop(new SpeechInputResult(source.m_utterance, source.m_confidence));
 }
 
 SpeechInputResult::SpeechInputResult(const String& utterance, double confidence)