Remove QuicString wrapper for std::string

gfe-relnote: n/a (no functional change)
PiperOrigin-RevId: 238124961
Change-Id: I36e66a4326b4118d70effd356aef9734d2893763
diff --git a/quic/core/quic_crypto_client_stream_test.cc b/quic/core/quic_crypto_client_stream_test.cc
index bd5162b..9d852c2 100644
--- a/quic/core/quic_crypto_client_stream_test.cc
+++ b/quic/core/quic_crypto_client_stream_test.cc
@@ -5,6 +5,7 @@
 #include "net/third_party/quiche/src/quic/core/quic_crypto_client_stream.h"
 
 #include <memory>
+#include <string>
 
 #include "net/third_party/quiche/src/quic/core/crypto/aes_128_gcm_12_encrypter.h"
 #include "net/third_party/quiche/src/quic/core/crypto/quic_decrypter.h"
@@ -17,7 +18,6 @@
 #include "net/third_party/quiche/src/quic/platform/api/quic_arraysize.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_flags.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_ptr_util.h"
-#include "net/third_party/quiche/src/quic/platform/api/quic_string.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_test.h"
 #include "net/third_party/quiche/src/quic/test_tools/crypto_test_utils.h"
 #include "net/third_party/quiche/src/quic/test_tools/quic_stream_peer.h"