Remove QuicString wrapper for std::string

gfe-relnote: n/a (no functional change)
PiperOrigin-RevId: 238124961
Change-Id: I36e66a4326b4118d70effd356aef9734d2893763
diff --git a/quic/tools/quic_url_test.cc b/quic/tools/quic_url_test.cc
index 3af0be7..608fdb1 100644
--- a/quic/tools/quic_url_test.cc
+++ b/quic/tools/quic_url_test.cc
@@ -4,8 +4,9 @@
 
 #include "net/third_party/quiche/src/quic/tools/quic_url.h"
 
+#include <string>
+
 #include "net/third_party/quiche/src/quic/platform/api/quic_str_cat.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"
 
 namespace quic {