Remove using namespace in net/quic/quic_stream_sequencer.h

net/quic/test_tools/mock_crypto_client_stream.cc

 // Copyright (c) 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.
 
 #include "net/quic/test_tools/mock_crypto_client_stream.h"
 
+#include <string>
+
 #include "net/quic/crypto/quic_decrypter.h"
 #include "net/quic/quic_client_session_base.h"
 #include "net/quic/quic_server_id.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 
 MockCryptoClientStream::MockCryptoClientStream(
     const QuicServerId& server_id,
     QuicClientSessionBase* session,
@@ skipping 71 matching lines @@
   cgst.push_back(kQBIC);
   session()->config()->SetCongestionFeedback(cgst, kQBIC);
   session()->config()->SetIdleConnectionStateLifetime(
       QuicTime::Delta::FromSeconds(2 * kMaximumIdleTimeoutSecs),
       QuicTime::Delta::FromSeconds(kMaximumIdleTimeoutSecs));
   session()->config()->SetMaxStreamsPerConnection(
       2 * kDefaultMaxStreamsPerConnection, kDefaultMaxStreamsPerConnection);
 
   CryptoHandshakeMessage msg;
   session()->config()->ToHandshakeMessage(&msg);
-  string error_details;
+  std::string error_details;
   const QuicErrorCode error =
       session()->config()->ProcessPeerHello(msg, CLIENT, &error_details);
   ASSERT_EQ(QUIC_NO_ERROR, error);
   ASSERT_TRUE(session()->config()->negotiated());
   session()->OnConfigNegotiated();
 }
 
 QuicClientSessionBase* MockCryptoClientStream::client_session() {
   return reinterpret_cast<QuicClientSessionBase*>(session());
 }
 
 }  // namespace net