Allow PeerConnection to be garbage collected after close().

Source/modules/mediastream/RTCStatsRequestImpl.h

Index: Source/modules/mediastream/RTCStatsRequestImpl.h
diff --git a/Source/modules/mediastream/RTCStatsRequestImpl.h b/Source/modules/mediastream/RTCStatsRequestImpl.h
index eb3b08e8c7c5f59c81b89141c004d1b3ffec4083..b0d8a24f38325073cc76e928ca457619b96432e7 100644
--- a/Source/modules/mediastream/RTCStatsRequestImpl.h
+++ b/Source/modules/mediastream/RTCStatsRequestImpl.h
@@ -27,6 +27,7 @@
 
 #include "core/dom/ActiveDOMObject.h"
 #include "modules/mediastream/RTCStatsResponse.h"
+#include "platform/heap/Handle.h"
 #include "platform/mediastream/RTCStatsRequest.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
@@ -35,11 +36,12 @@
 namespace WebCore {
 
 class MediaStreamTrack;
+class RTCPeerConnection;
 class RTCStatsCallback;
 
 class RTCStatsRequestImpl FINAL : public RTCStatsRequest, public ActiveDOMObject {
 public:
-    static PassRefPtr<RTCStatsRequestImpl> create(ExecutionContext*, PassOwnPtr<RTCStatsCallback>, PassRefPtr<MediaStreamTrack>);
+    static PassRefPtr<RTCStatsRequestImpl> create(ExecutionContext*, PassRefPtrWillBeRawPtr<RTCPeerConnection>, PassOwnPtr<RTCStatsCallback>, PassRefPtr<MediaStreamTrack>);
     virtual ~RTCStatsRequestImpl();
 
     virtual PassRefPtrWillBeRawPtr<RTCStatsResponseBase> createResponse() OVERRIDE;
@@ -52,12 +54,14 @@ public:
     virtual void stop() OVERRIDE;
 
 private:
-    RTCStatsRequestImpl(ExecutionContext*, PassOwnPtr<RTCStatsCallback>, PassRefPtr<MediaStreamTrack>);
+    RTCStatsRequestImpl(ExecutionContext*, PassRefPtrWillBeRawPtr<RTCPeerConnection>, PassOwnPtr<RTCStatsCallback>, PassRefPtr<MediaStreamTrack>);
 
     void clear();
 
     OwnPtr<RTCStatsCallback> m_successCallback;
     RefPtr<MediaStreamComponent> m_component;
+
+    RefPtrWillBePersistent<RTCPeerConnection> m_requester;
 };
 
 } // namespace WebCore