clang-format

src/core/ext/client_channel/client_channel.c

src/core/lib/json/json.c

src/core/lib/json/json.h

src/core/lib/support/string.c

src/core/lib/support/string.h

src/core/lib/transport/method_config.c

test/core/end2end/connection_refused_test.c

test/core/end2end/tests/cancel_after_accept.c

test/core/end2end/tests/max_message_length.c