Add close benchmark rpc calls
Add close benchmark rpc calls

thinkerou/grpc-go,hugoz1234/grpc-go,fuchsia-mirror/third_party-grpc-grpc-go,menghanl/grpc-go,dfawley/grpc-go,dsymonds/grpc-go,mpl/grpc-go,go4org/grpc,improbable-io/grpc-go,rakyll/grpc-go,stanley-cheung/grpc-go,peter-edge/grpc-go,rakyll/grpc-go,MakMukhi/grpc-go,dfawley/grpc-go,bradfitz/grpc-go,stanley-cheung/grpc-go,fuchsia-mirror/third_party-grpc-grpc-go,andreimatei/grpc-go,grpc/grpc-go,andreimatei/grpc-go,menghanl/grpc-go,hugoz1234/grpc-go,peter-edge/grpc-go,improbable-io/grpc-go,mpl/grpc-go,thinkerou/grpc-go,go4org/grpc,dsymonds/grpc-go,iamqizhao/grpc-go,iamqizhao/grpc-go,bradfitz/grpc-go,grpc/grpc-go,MakMukhi/grpc-go