Merge pull request #10584 from ctiller/hybrid

grpc.def

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

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

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

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

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

include/grpc/grpc.h

include/grpc/impl/codegen/grpc_types.h

src/core/lib/surface/completion_queue.c

src/core/lib/surface/completion_queue.h

src/core/lib/surface/server.c

src/cpp/common/core_codegen.cc

src/cpp/server/server_builder.cc

src/node/ext/server_generic.cc

src/proto/grpc/health/v1/BUILD

src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi

src/python/grpcio/grpc/_cython/_cygrpc/server.pyx.pxi

src/ruby/ext/grpc/rb_grpc_imports.generated.c

src/ruby/ext/grpc/rb_grpc_imports.generated.h

test/cpp/end2end/BUILD