[CrOS Tether] Create TetherConnector, which attempts to connect to a nearby tether host.

chromeos/components/tether/fake_wifi_hotspot_connector.h

 // 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.
 
 #ifndef CHROMEOS_COMPONENTS_TETHER_FAKE_WIFI_HOTSPOT_CONNECTOR_H_
 #define CHROMEOS_COMPONENTS_TETHER_FAKE_WIFI_HOTSPOT_CONNECTOR_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "chromeos/components/tether/wifi_hotspot_connector.h"
 
 namespace chromeos {
 
 namespace tether {
 
 // Test double for WifiHotspotConnector.
 class FakeWifiHotspotConnector : public WifiHotspotConnector {
  public:
-  static std::unique_ptr<FakeWifiHotspotConnector> Create();
+  FakeWifiHotspotConnector(NetworkStateHandler* network_state_handler);
   ~FakeWifiHotspotConnector() override;
 
   // Pass an empty string for |wifi_guid| to signify a failed connection.
   void CallMostRecentCallback(const std::string& wifi_guid);
 
   std::string most_recent_ssid() { return most_recent_ssid_; }
 
   std::string most_recent_password() { return most_recent_password_; }
 
   // WifiHotspotConnector:
   void ConnectToWifiHotspot(
       const std::string& ssid,
       const std::string& password,
       const WifiHotspotConnector::WifiConnectionCallback& callback) override;
 
  private:
-  FakeWifiHotspotConnector(
-      std::unique_ptr<NetworkStateHandler> network_state_handler);
-
   std::string most_recent_ssid_;
   std::string most_recent_password_;
   WifiHotspotConnector::WifiConnectionCallback most_recent_callback_;
 
-  // Not actually used. Only stored to keep the pointer valid for the lifetime
-  // of the object so that AddObserver() and RemoteObserver() can be called in
-  // the base class constructor/destructor.
-  std::unique_ptr<NetworkStateHandler> network_state_handler_;
-
   DISALLOW_COPY_AND_ASSIGN(FakeWifiHotspotConnector);
 };
 
 }  // namespace tether
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_COMPONENTS_TETHER_FAKE_WIFI_HOTSPOT_CONNECTOR_H_