Remove using namespace in net/quic/quic_stream_sequencer.h

net/quic/quic_headers_stream.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/quic/quic_headers_stream.h"
 
 #include "net/quic/quic_session.h"
 
 using base::StringPiece;
+using std::string;
 
 namespace net {
 
 namespace {
 
 const QuicStreamId kInvalidStreamId = 0;
 
 }  // namespace
 
 // A SpdyFramer visitor which passed SYN_STREAM and SYN_REPLY frames to
@@ skipping 249 matching lines @@
   DCHECK_EQ(kInvalidStreamId, stream_id_);
   DCHECK_EQ(0u, frame_len_);
   frame_len_ = frame_len;
 }
 
 bool QuicHeadersStream::IsConnected() {
   return session()->connection()->connected();
 }
 
 }  // namespace net