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

net/http/http_stream_factory_impl_request.cc

 // 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.
 
 #include "net/http/http_stream_factory_impl_request.h"
 
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "net/http/bidirectional_stream_impl.h"
@@ skipping 136 matching lines @@
 bool HttpStreamFactoryImpl::Request::using_spdy() const {
   DCHECK(completed_);
   return using_spdy_;
 }
 
 const ConnectionAttempts& HttpStreamFactoryImpl::Request::connection_attempts()
     const {
   return connection_attempts_;
 }
 
-void HttpStreamFactoryImpl::Request::ResetSpdySessionKey() {
-  if (spdy_session_key_.get()) {
-    spdy_session_key_.reset();
-  }
-}
-
 bool HttpStreamFactoryImpl::Request::HasSpdySessionKey() const {
   return spdy_session_key_.get() != NULL;
 }
 
 void HttpStreamFactoryImpl::Request::AddConnectionAttempts(
     const ConnectionAttempts& attempts) {
   for (const auto& attempt : attempts)
     connection_attempts_.push_back(attempt);
 }
 
 }  // namespace net