Remove using namespace in net/quic/quic_stream_sequencer.h

chrome/browser/net/network_stats_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 "base/basictypes.h"
 #include "base/message_loop/message_loop.h"
 #include "chrome/browser/net/network_stats.h"
 #include "net/base/net_errors.h"
 #include "net/base/network_change_notifier.h"
 #include "net/base/test_completion_callback.h"
 #include "net/dns/host_resolver.h"
 #include "net/dns/mock_host_resolver.h"
 #include "net/socket/socket_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
+using std::string;
+
 namespace chrome_browser_net {
 
 class NetworkStatsTest : public PlatformTest {
  public:
   NetworkStatsTest() {}
 
  protected:
   void SetUp() override {
     net::NetworkChangeNotifier::NotifyObserversOfIPAddressChangeForTests();
     base::MessageLoop::current()->RunUntilIdle();
@@ skipping 372 matching lines @@
   TestStartOneTest(
       false, NetworkStats::PACKET_SIZE_TEST, 1500, 0, 1, net::SYNCHRONOUS);
 }
 
 TEST_F(NetworkStatsTest, StartPacketSizeTest1500BHasNoProxy) {
   TestStartOneTest(
       false, NetworkStats::PACKET_SIZE_TEST, 1500, 0, 1, net::ASYNC);
 }
 
 }  // namespace chrome_browser_net