Remove using namespace in net/quic/quic_stream_sequencer.h

net/tools/quic/quic_spdy_client_stream_test.cc

 // Copyright 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/tools/quic/quic_spdy_client_stream.h"
 
+#include <string>
+
 #include "base/strings/string_number_conversions.h"
 #include "net/quic/quic_utils.h"
 #include "net/quic/test_tools/quic_test_utils.h"
 #include "net/tools/quic/quic_client_session.h"
 #include "net/tools/quic/quic_spdy_client_stream.h"
 #include "net/tools/quic/spdy_utils.h"
 #include "net/tools/quic/test_tools/quic_test_utils.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using net::test::DefaultQuicConfig;
 using net::test::SupportedVersions;
+using std::string;
 using testing::StrictMock;
 using testing::TestWithParam;
 
 namespace net {
 namespace tools {
 namespace test {
 namespace {
 
 class QuicSpdyClientStreamTest : public TestWithParam<QuicVersion> {
  public:
@@ skipping 73 matching lines @@
 
   EXPECT_FALSE(stream_->write_side_closed());
   stream_->OnStreamFrame(frame);
   EXPECT_TRUE(stream_->write_side_closed());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace tools
 }  // namespace net