clang-format

include/grpc++/client_context.h

include/grpc++/completion_queue.h

include/grpc++/config.h

include/grpc++/impl/call.h

include/grpc++/impl/client_unary_call.h

include/grpc++/impl/rpc_service_method.h

include/grpc++/server.h

include/grpc++/stream.h

src/cpp/client/channel.cc

src/cpp/client/channel.h

src/cpp/client/client_unary_call.cc

src/cpp/common/call.cc

src/cpp/common/completion_queue.cc

src/cpp/server/async_server_context.cc