HostScanner: Add scanned hosts to NetworkStateHandler and NotificationPresenter.

chromeos/components/tether/host_scan_scheduler_unittest.cc

 // Copyright 2016 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/components/tether/host_scan_scheduler.h"
 
 #include "base/memory/ptr_util.h"
 #include "chromeos/components/tether/host_scanner.h"
 #include "chromeos/dbus/power_manager_client.h"
 #include "chromeos/login/login_state.h"
@@ skipping 64 matching lines @@
 
     HostScanScheduler* observer_;
     bool is_authenticated_user_logged_in;
     bool is_network_connected_or_connecting;
     bool are_tether_hosts_synced;
   };
 
   class FakeHostScanner : public HostScanner {
    public:
     FakeHostScanner()
-        : HostScanner(nullptr, nullptr, nullptr), num_scans_started_(0) {}
+        : HostScanner(nullptr, nullptr, nullptr, nullptr, nullptr),
+          num_scans_started_(0) {}
     ~FakeHostScanner() override {}
 
     void StartScan() override { num_scans_started_++; }
 
     int num_scans_started() { return num_scans_started_; }
 
    private:
     int num_scans_started_;
   };
 
@@ skipping 124 matching lines @@
   test_delegate_->set_are_tether_hosts_synced(false);
   host_scan_scheduler_->OnSyncFinished(
       cryptauth::CryptAuthDeviceManager::SyncResult::SUCCESS,
       cryptauth::CryptAuthDeviceManager::DeviceChangeResult::UNCHANGED);
   EXPECT_EQ(1, fake_host_scanner_->num_scans_started());
 }
 
 }  // namespace tether
 
 }  // namespace chromeos