Oilpan: Reduce RefPtr to WorkerGlobalScope.

Source/core/workers/SharedWorkerGlobalScope.cpp

Index: Source/core/workers/SharedWorkerGlobalScope.cpp
diff --git a/Source/core/workers/SharedWorkerGlobalScope.cpp b/Source/core/workers/SharedWorkerGlobalScope.cpp
index 0f9375631b26d5a38aed039c68042abc580e7f96..7e480caad9c7515b0c4daf9b9cef6ae161c07855 100644
--- a/Source/core/workers/SharedWorkerGlobalScope.cpp
+++ b/Source/core/workers/SharedWorkerGlobalScope.cpp
@@ -41,9 +41,9 @@
 
 namespace WebCore {
 
-PassRefPtrWillBeRawPtr<MessageEvent> createConnectEvent(PassRefPtr<MessagePort> prpPort)
+PassRefPtrWillBeRawPtr<MessageEvent> createConnectEvent(PassRefPtrWillBeRawPtr<MessagePort> prpPort)
 {
-    RefPtr<MessagePort> port = prpPort;
+    RefPtrWillBeRawPtr<MessagePort> port = prpPort;
     RefPtrWillBeRawPtr<MessageEvent> event = MessageEvent::create(adoptPtr(new MessagePortArray(1, port)), String(), String(), port);
     event->initEvent(EventTypeNames::connect, false, false);
     return event.release();