Remove using namespace in net/quic/quic_stream_sequencer.h

net/quic/quic_stream_factory.cc

Index: net/quic/quic_stream_factory.cc
diff --git a/net/quic/quic_stream_factory.cc b/net/quic/quic_stream_factory.cc
index 32adedae7cfcb87c7bd14f40784e94e6488978ad..1b15f11aae1edc42e520c5cd7fcc0011d67f54dc 100644
--- a/net/quic/quic_stream_factory.cc
+++ b/net/quic/quic_stream_factory.cc
@@ -5,6 +5,7 @@
 #include "net/quic/quic_stream_factory.h"
 
 #include <set>
+#include <string>
 
 #include "base/cpu.h"
 #include "base/message_loop/message_loop.h"
@@ -40,9 +41,6 @@
 #include "base/win/windows_version.h"
 #endif
 
-using std::string;
-using std::vector;
-
 namespace net {
 
 namespace {