net: fix multiple use-after-scope issues in net_unittests.

net/http/http_network_transaction_ssl_unittest.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 <memory>
 #include <string>
 #include <vector>
 
 #include "base/deferred_sequenced_task_runner.h"
 #include "base/memory/ptr_util.h"
@@ skipping 183 matching lines @@
   SSLSocketDataProvider ssl_data(ASYNC, OK);
   ssl_data.token_binding_negotiated = true;
   ssl_data.token_binding_key_param = TB_PARAM_ECDSAP256;
   ssl_data.next_proto = kProtoHTTP2;
   mock_socket_factory_.AddSSLSocketDataProvider(&ssl_data);
 
   MockRead reads[] = {MockRead(ASYNC, OK, 0)};
   StaticSocketDataProvider data(reads, arraysize(reads), nullptr, 0);
   mock_socket_factory_.AddSocketDataProvider(&data);
 
-  HttpNetworkSession session(session_params_);
-  HttpNetworkTransaction trans(DEFAULT_PRIORITY, &session);
-
   HttpRequestInfo request_info;
   request_info.url = GURL("https://www.example.com/");
   request_info.method = "GET";
   request_info.token_binding_referrer = "encrypted.example.com";
 
+  HttpNetworkSession session(session_params_);
+  HttpNetworkTransaction trans(DEFAULT_PRIORITY, &session);
+
   TestCompletionCallback callback;
   int rv = trans.Start(&request_info, callback.callback(), NetLogWithSource());
   EXPECT_THAT(rv, IsError(ERR_IO_PENDING));
 
   base::RunLoop().RunUntilIdle();
 
   // When ChannelIdService calls back to HttpNetworkSession,
   // SpdyHttpStream should not crash.
   channel_id_runner->Start();
 
   rv = callback.WaitForResult();
   EXPECT_THAT(rv, IsError(ERR_CONNECTION_CLOSED));
 }
 #endif  // !defined(OS_IOS)
 
 }  // namespace net