[CrOS Tether] Add the notion of a tether DeviceState.

chromeos/network/network_connect_unittest.cc

Index: chromeos/network/network_connect_unittest.cc
diff --git a/chromeos/network/network_connect_unittest.cc b/chromeos/network/network_connect_unittest.cc
index 930b3d0176532f9f0581fcbf855cfd0b832f557b..2eb4d44217d4e478739edf8647052c153acd2620 100644
--- a/chromeos/network/network_connect_unittest.cc
+++ b/chromeos/network/network_connect_unittest.cc
@@ -336,6 +336,9 @@ TEST_F(NetworkConnectTest, ShowMobileSimDialog_SimUnlocked) {
 TEST_F(NetworkConnectTest, ConnectToTetherNetwork) {
   EXPECT_CALL(*mock_tether_delegate_, ConnectToNetwork(kTether1Guid));
 
+  NetworkHandler::Get()->network_state_handler()->SetTetherTechnologyState(
+      NetworkStateHandler::TECHNOLOGY_ENABLED);
+
   NetworkHandler::Get()->network_state_handler()->AddTetherNetworkState(
       kTether1Guid, "TetherNetwork", "Carrier", 100 /* battery_percentage */,
       100 /* signal_strength */);
@@ -347,6 +350,9 @@ TEST_F(NetworkConnectTest, ConnectToTetherNetwork) {
 TEST_F(NetworkConnectTest, ConnectToTetherNetwork_TetherNetworkDoesNotExist) {
   EXPECT_CALL(*mock_tether_delegate_, ConnectToNetwork(_)).Times(0);
 
+  NetworkHandler::Get()->network_state_handler()->SetTetherTechnologyState(
+      NetworkStateHandler::TECHNOLOGY_ENABLED);
+
   NetworkConnect::Get()->SetTetherDelegate(mock_tether_delegate_.get());
   NetworkConnect::Get()->ConnectToNetworkId(kTether1Guid);
 }
@@ -354,6 +360,9 @@ TEST_F(NetworkConnectTest, ConnectToTetherNetwork_TetherNetworkDoesNotExist) {
 TEST_F(NetworkConnectTest, ConnectToTetherNetwork_TetherDelegateNotSet) {
   EXPECT_CALL(*mock_tether_delegate_, ConnectToNetwork(_)).Times(0);
 
+  NetworkHandler::Get()->network_state_handler()->SetTetherTechnologyState(
+      NetworkStateHandler::TECHNOLOGY_ENABLED);
+
   NetworkHandler::Get()->network_state_handler()->AddTetherNetworkState(
       kTether1Guid, "TetherNetwork", "Carrier", 100 /* battery_percentage */,
       100 /* signal_strength */);