Fix a potential infinite loop in HttpStreamFactoryImpl when a new SpdySession is established

net/http/http_stream_factory_impl_request.h

 // Copyright (c) 2012 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_HTTP_HTTP_STREAM_FACTORY_IMPL_REQUEST_H_
 #define NET_HTTP_HTTP_STREAM_FACTORY_IMPL_REQUEST_H_
 
 #include <memory>
 #include <set>
 
@@ skipping 53 matching lines @@
   // supported for this SpdySessionKey, since we may need to wait for NPN to
   // complete before knowing if SPDY is available.
   void SetSpdySessionKey(const SpdySessionKey& spdy_session_key);
   bool HasSpdySessionKey() const;
 
   // Marks completion of the request. Must be called before OnStreamReady().
   void Complete(bool was_alpn_negotiated,
                 NextProto negotiated_protocol,
                 bool using_spdy);
 
-  void ResetSpdySessionKey();
-
   // Called by |helper_| to record connection attempts made by the socket
   // layer in an attached Job for this stream request.
   void AddConnectionAttempts(const ConnectionAttempts& attempts);
 
   WebSocketHandshakeStreamBase::CreateHelper*
   websocket_handshake_stream_create_helper() {
     return websocket_handshake_stream_create_helper_;
   }
 
   // HttpStreamRequest::Delegate methods which we implement. Note we don't
@@ skipping 59 matching lines @@
   bool using_spdy_;
   ConnectionAttempts connection_attempts_;
 
   const HttpStreamRequest::StreamType stream_type_;
   DISALLOW_COPY_AND_ASSIGN(Request);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_STREAM_FACTORY_IMPL_REQUEST_H_