message: TPU internal change.
diff: # Description: StreamExecutor Interface for TPUs
  package(
  - default_visibility = ["//tensorflow/core/tpu:__subpackages__"],
  + default_visibility = [
  + "//learning/brain/tfrc/runtime/tpu_driver:__subpackages__",
  + "//tensorflow/core/tpu:__subpackages__",
  + ],
  licenses = ["notice"], # Apache 2.0
  )
  