Merge pull request #3021 from ctiller/reject-the-stuffs

Makefile

build.json

src/core/channel/compress_filter.h

src/core/surface/call.c

src/core/transport/metadata.c

src/core/transport/metadata.h

src/python/grpcio_test/grpc_test/_adapter/_links_test.py

src/python/grpcio_test/grpc_test/_cython/adapter_low_test.py

...python/grpcio_test/grpc_test/_links/_transmission_test.py

tools/codegen/core/gen_legal_metadata_characters.c

tools/run_tests/jobset.py

tools/run_tests/sources_and_headers.json

vsprojects/Grpc.mak