new CopyNextStreamMessage() method

mailnews/imap/public/nsIImapMiscellaneousSink.h

@@ -82,6 +82,8 @@ public:
 													 TunnelInfo *aInfo) = 0;
 	NS_IMETHOD LoadNextQueuedUrl(nsIImapProtocol* aProtocol,
 													 nsIImapIncomingServer *incomingServer) = 0;
+  NS_IMETHOD CopyNextStreamMessage(nsIImapProtocol* aProtocol,
+                                   void* copyState) = 0;
 };