message: Restore TpuPlatform auto registration code.
diff: @@ -134,4 +134,12 @@ void RegisterTpuPlatform() {
  }
  }
  +REGISTER_MODULE_INITIALIZER(tpu_platform, RegisterTpuPlatform());
  +
  +// Note that module initialization sequencing is not supported in the
  +// open-source project, so this will be a no-op there.
  +REGISTER_MODULE_INITIALIZER_SEQUENCE(tpu_platform, multi_platform_manager);
  +REGISTER_MODULE_INITIALIZER_SEQUENCE(multi_platform_manager_listener,
  + tpu_platform);
  +
  } // namespace tensorflow
  