[SPDY] Use WeakPtr<SpdySession> everywhere but SpdySessionPool

net/websockets/websocket_stream_base.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_WEBSOCKETS_WEBSOCKET_STREAM_BASE_H_
 #define NET_WEBSOCKETS_WEBSOCKET_STREAM_BASE_H_
 
 // This file is included from net/http files.
 // Since net/http can be built without linking net/websockets code,
 // this file should not depend on net/websockets.
@@ skipping 16 matching lines @@
 
     // Create a WebSocketBasicStream.
     // This function (or the returned object) takes the ownership
     // of |connection|.
     virtual WebSocketStreamBase* CreateBasicStream(
         ClientSocketHandle* connection,
         bool using_proxy) = 0;
 
     // Create a WebSocketSpdyStream.
     virtual WebSocketStreamBase* CreateSpdyStream(
-        SpdySession* session,
+        const base::WeakPtr<SpdySession>& session,
         bool use_relative_url) = 0;
   };
 
   virtual ~WebSocketStreamBase() {}
 
   // Return this object as a WebSocketStream.
   virtual WebSocketStream* AsWebSocketStream() = 0;
 
  protected:
   WebSocketStreamBase() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebSocketStreamBase);
 };
 
 }  // namespace net
 
 #endif  // NET_WEBSOCKETS_WEBSOCKET_STREAM_BASE_H_