Remove the configuration of Tether-associated Wi-Fi networks once connectivity is lost.

chromeos/components/tether/BUILD.gn

Index: chromeos/components/tether/BUILD.gn
diff --git a/chromeos/components/tether/BUILD.gn b/chromeos/components/tether/BUILD.gn
index e4ba61600972d6bf76a929a52e590a2518806de1..61c3dccbd9d3d5a6cc9ece96aa7d198ecf261304 100644
--- a/chromeos/components/tether/BUILD.gn
+++ b/chromeos/components/tether/BUILD.gn
@@ -44,6 +44,8 @@ static_library("tether") {
     "message_transfer_operation.h",
     "message_wrapper.cc",
     "message_wrapper.h",
+    "network_configuration_remover.cc",
+    "network_configuration_remover.h",
     "notification_presenter.h",
     "pref_names.cc",
     "pref_names.h",
@@ -133,6 +135,7 @@ source_set("unit_tests") {
     "local_device_data_provider_unittest.cc",
     "message_transfer_operation_unittest.cc",
     "message_wrapper_unittest.cc",
+    "network_configuration_remover_unittest.cc",
     "tether_connector_unittest.cc",
     "tether_host_fetcher_unittest.cc",
     "tether_network_disconnection_handler_unittest.cc",