Merge github.com:grpc/grpc into lto

BUILD

binding.gyp

build.yaml

doc/PROTOCOL-WEB.md

doc/internationalization.md

etc/roots.pem

src/core/ext/client_channel/client_channel.c

src/core/ext/client_channel/parse_address.c

...ore/ext/transport/chttp2/client/insecure/channel_create.c

...xt/transport/chttp2/client/secure/secure_channel_create.c

src/core/lib/iomgr/pollset_uv.c

src/core/lib/tsi/test_creds/BUILD

...ython/grpcio_tests/tests/unit/_invocation_defects_test.py

src/python/grpcio_tests/tests/unit/_thread_cleanup_test.py

templates/binding.gyp.template

test/core/census/BUILD

test/core/channel/BUILD

test/core/compression/BUILD

...s/api_fuzzer_corpus/clusterfuzz-testcase-5834320218423296

test/core/handshake/BUILD