[CrOS Tether] Add HasConnectedToHost property for Tether networks.

chromeos/network/network_state_unittest.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chromeos/network/network_state.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
@@ skipping 244 matching lines @@
   network_state_.set_connection_state(shill::kStateConfiguration);
   EXPECT_EQ(network_state_.connection_state(), shill::kStateDisconnect);
   EXPECT_FALSE(network_state_.IsConnectingState());
   EXPECT_FALSE(network_state_.IsReconnecting());
 }
 
 TEST_F(NetworkStateTest, TetherProperties) {
   network_state_.set_type(kTypeTether);
   network_state_.set_carrier("Project Fi");
   network_state_.set_battery_percentage(85);
+  network_state_.set_tether_has_connected_to_host(true);
   network_state_.set_signal_strength(75);
 
   base::DictionaryValue dictionary;
   network_state_.GetStateProperties(&dictionary);
 
   int signal_strength;
   EXPECT_TRUE(dictionary.GetIntegerWithoutPathExpansion(kTetherSignalStrength,
                                                         &signal_strength));
   EXPECT_EQ(75, signal_strength);
 
   int battery_percentage;
   EXPECT_TRUE(dictionary.GetIntegerWithoutPathExpansion(
       kTetherBatteryPercentage, &battery_percentage));
   EXPECT_EQ(85, battery_percentage);
 
+  bool tether_has_connected_to_host;
+  EXPECT_TRUE(dictionary.GetBooleanWithoutPathExpansion(
+      kTetherHasConnectedToHost, &tether_has_connected_to_host));
+  EXPECT_TRUE(tether_has_connected_to_host);
+
   std::string carrier;
   EXPECT_TRUE(
       dictionary.GetStringWithoutPathExpansion(kTetherCarrier, &carrier));
   EXPECT_EQ("Project Fi", carrier);
 }
 
 }  // namespace chromeos