message: Upgrade rules_closure
  To get fixes from upstream
diff: @@ -4,11 +4,11 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive", "http_file"
  http_archive(
  name = "io_bazel_rules_closure",
  - sha256 = "ddce3b3a3909f99b28b25071c40b7fec7e2e1d1d1a4b2e933f3082aa99517105",
  - strip_prefix = "rules_closure-316e6133888bfc39fb860a4f1a31cfcbae485aef",
  + sha256 = "e0a111000aeed2051f29fcc7a3f83be3ad8c6c93c186e64beb1ad313f0c7f9f9",
  + strip_prefix = "rules_closure-cf1e44edb908e9616030cc83d085989b8e6cd6df",
  urls = [
  - "http://mirror.tensorflow.org/github.com/bazelbuild/rules_closure/archive/316e6133888bfc39fb860a4f1a31cfcbae485aef.tar.gz",
  - "https://github.com/bazelbuild/rules_closure/archive/316e6133888bfc39fb860a4f1a31cfcbae485aef.tar.gz", # 2019-03-21
  + "http://mirror.tensorflow.org/github.com/bazelbuild/rules_closure/archive/cf1e44edb908e9616030cc83d085989b8e6cd6df.tar.gz",
  + "https://github.com/bazelbuild/rules_closure/archive/cf1e44edb908e9616030cc83d085989b8e6cd6df.tar.gz", # 2019-04-04
  ],
  )
  