--- a/services/network/public/cpp/cors/cors_legacy.h	2018-05-24 
06:09:13.000000000 -0400
+++ b/services/network/public/cpp/cors/cors_legacy.h.new	
2018-05-24 18:28:21.171122802 -0400
@@ -6,6 +6,7 @@
 #define SERVICES_NETWORK_PUBLIC_CPP_CORS_CORS_LEGACY_H_
 
 #include <vector>
+#include <string>
 
 #include "base/component_export.h"