Merge pull request #4736 from dgquintas/newlines

include/grpc++/generic/async_generic_service.h

include/grpc++/support/byte_buffer.h

include/grpc++/support/slice.h

src/core/transport/metadata.c

src/core/transport/metadata.h

src/node/ext/call.cc

src/node/interop/async_delay_queue.js

src/proto/grpc/testing/duplicate/echo_duplicate.proto

src/proto/grpc/testing/echo.proto

test/cpp/end2end/client_crash_test.cc

test/cpp/end2end/client_crash_test_server.cc

test/cpp/end2end/end2end_test.cc

test/cpp/end2end/mock_test.cc

test/cpp/end2end/server_crash_test.cc

test/cpp/end2end/server_crash_test_client.cc

test/cpp/end2end/shutdown_test.cc

test/cpp/end2end/streaming_throughput_test.cc

test/cpp/end2end/thread_stress_test.cc

test/cpp/end2end/zookeeper_test.cc

test/cpp/qps/client.h