Allow PeerConnection to be garbage collected after close().

Source/modules/mediastream/RTCStatsRequestImpl.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef RTCStatsRequestImpl_h
 #define RTCStatsRequestImpl_h
 
 #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"
 #include "wtf/text/WTFString.h"
 
 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;
     virtual bool hasSelector() OVERRIDE;
     virtual MediaStreamComponent* component() OVERRIDE;
 
     virtual void requestSucceeded(PassRefPtrWillBeRawPtr<RTCStatsResponseBase>) OVERRIDE;
 
     // ActiveDOMObject
     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
 
 #endif // RTCStatsRequestImpl_h