[EasyUnlock] Update ProximityMonitor to only check for RSSI proximity.

components/proximity_auth/remote_device_life_cycle_impl.h

 // Copyright 2015 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 COMPONENTS_PROXIMITY_AUTH_REMOTE_DEVICE_LIFE_CYCLE_IMPL_H
 #define COMPONENTS_PROXIMITY_AUTH_REMOTE_DEVICE_LIFE_CYCLE_IMPL_H
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 23 matching lines @@
  public:
   // Creates the life cycle for controlling the given |remote_device|.
   // |proximity_auth_client| is not owned.
   RemoteDeviceLifeCycleImpl(const cryptauth::RemoteDevice& remote_device,
                             ProximityAuthClient* proximity_auth_client);
   ~RemoteDeviceLifeCycleImpl() override;
 
   // RemoteDeviceLifeCycle:
   void Start() override;
   cryptauth::RemoteDevice GetRemoteDevice() const override;
+  cryptauth::Connection* GetConnection() const override;
   RemoteDeviceLifeCycle::State GetState() const override;
   Messenger* GetMessenger() override;
   void AddObserver(Observer* observer) override;
   void RemoveObserver(Observer* observer) override;
 
  protected:
   // Creates and returns a cryptauth::ConnectionFinder instance for
   // |remote_device_|.
   // Exposed for testing.
   virtual std::unique_ptr<cryptauth::ConnectionFinder> CreateConnectionFinder();
@@ skipping 64 matching lines @@
   base::OneShotTimer authentication_recovery_timer_;
 
   base::WeakPtrFactory<RemoteDeviceLifeCycleImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RemoteDeviceLifeCycleImpl);
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_REMOTE_DEVICE_LIFE_CYCLE_IMPL_H