clang-format

include/grpc++/security/credentials.h

src/core/security/credentials.c

src/core/security/credentials.h

src/core/security/google_default_credentials.c

src/core/security/security_connector.c

src/cpp/client/insecure_credentials.cc

src/cpp/client/secure_credentials.h

test/core/client_config/lb_policies_test.c

test/core/end2end/tests/hpack_size.c

test/core/security/credentials_test.c