[SPDY] Use WeakPtr<SpdySession> everywhere but SpdySessionPool

net/spdy/spdy_websocket_stream.h

Index: net/spdy/spdy_websocket_stream.h
diff --git a/net/spdy/spdy_websocket_stream.h b/net/spdy/spdy_websocket_stream.h
index d4a71969d9fb0177db26a58c2228dba294796a65..169d1e481a87111b1d08782904c25c6c8b12af09 100644
--- a/net/spdy/spdy_websocket_stream.h
+++ b/net/spdy/spdy_websocket_stream.h
@@ -58,7 +58,8 @@ class NET_EXPORT_PRIVATE SpdyWebSocketStream
     virtual ~Delegate() {}
   };
 
-  SpdyWebSocketStream(SpdySession* spdy_session, Delegate* delegate);
+  SpdyWebSocketStream(const base::WeakPtr<SpdySession>& spdy_session,
+                      Delegate* delegate);
   virtual ~SpdyWebSocketStream();
 
   // Initializes SPDY stream for the WebSocket.
@@ -90,7 +91,7 @@ class NET_EXPORT_PRIVATE SpdyWebSocketStream
   base::WeakPtrFactory<SpdyWebSocketStream> weak_ptr_factory_;
   SpdyStreamRequest stream_request_;
   base::WeakPtr<SpdyStream> stream_;
-  scoped_refptr<SpdySession> spdy_session_;
+  const base::WeakPtr<SpdySession> spdy_session_;
   size_t pending_send_data_length_;
   Delegate* delegate_;