Merge pull request #5895 from ctiller/clang_fmt_upd

include/grpc++/generic/async_generic_service.h

include/grpc++/impl/codegen/async_stream.h

include/grpc++/impl/codegen/async_unary_call.h

include/grpc++/impl/codegen/call.h

include/grpc++/impl/codegen/client_unary_call.h

include/grpc++/impl/codegen/impl/async_stream.h

include/grpc++/impl/codegen/method_handler_impl.h

include/grpc++/impl/codegen/rpc_service_method.h

include/grpc++/impl/codegen/server_context.h

include/grpc++/impl/codegen/server_interface.h

include/grpc++/impl/codegen/sync_stream.h

include/grpc++/support/byte_buffer.h

include/grpc++/support/channel_arguments.h

include/grpc++/support/slice.h

include/grpc/byte_buffer_reader.h

include/grpc/compression.h

include/grpc/grpc.h

include/grpc/grpc_security.h

include/grpc/impl/codegen/log.h

include/grpc/impl/codegen/slice.h