Move mediastream module to oilpan transition types

Source/modules/mediastream/RTCSessionDescription.cpp

Index: Source/modules/mediastream/RTCSessionDescription.cpp
diff --git a/Source/modules/mediastream/RTCSessionDescription.cpp b/Source/modules/mediastream/RTCSessionDescription.cpp
index 6458972810362bc590d0c48454e2cf467dee65b3..1b638df7da84d2a4b44bbb4b0faa369a1c0fb0a2 100644
--- a/Source/modules/mediastream/RTCSessionDescription.cpp
+++ b/Source/modules/mediastream/RTCSessionDescription.cpp
@@ -38,6 +38,8 @@
 
 namespace WebCore {
 
+DEFINE_GC_INFO(RTCSessionDescription);
+
 static bool verifyType(const String& type)
 {
     return type == "offer" || type == "pranswer" || type == "answer";
@@ -48,7 +50,7 @@ static String constructIllegalTypeExceptionMessage(const String& type)
     return "Illegal value of attribute 'type' : " + type;
 }
 
-PassRefPtr<RTCSessionDescription> RTCSessionDescription::create(const Dictionary& descriptionInitDict, ExceptionState& exceptionState)
+PassRefPtrWillBeRawPtr<RTCSessionDescription> RTCSessionDescription::create(const Dictionary& descriptionInitDict, ExceptionState& exceptionState)
 {
     String type;
     bool ok = descriptionInitDict.get("type", type);
@@ -60,12 +62,12 @@ PassRefPtr<RTCSessionDescription> RTCSessionDescription::create(const Dictionary
     String sdp;
     descriptionInitDict.get("sdp", sdp);
 
-    return adoptRef(new RTCSessionDescription(blink::WebRTCSessionDescription(type, sdp)));
+    return adoptRefWillBeNoop(new RTCSessionDescription(blink::WebRTCSessionDescription(type, sdp)));
 }
 
-PassRefPtr<RTCSessionDescription> RTCSessionDescription::create(blink::WebRTCSessionDescription webSessionDescription)
+PassRefPtrWillBeRawPtr<RTCSessionDescription> RTCSessionDescription::create(blink::WebRTCSessionDescription webSessionDescription)
 {
-    return adoptRef(new RTCSessionDescription(webSessionDescription));
+    return adoptRefWillBeNoop(new RTCSessionDescription(webSessionDescription));
 }
 
 RTCSessionDescription::RTCSessionDescription(blink::WebRTCSessionDescription webSessionDescription)