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

components/proximity_auth/unlock_manager_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_UNLOCK_MANAGER_IMPL_H
 #define COMPONENTS_PROXIMITY_AUTH_UNLOCK_MANAGER_IMPL_H
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 34 matching lines @@
   ~UnlockManagerImpl() override;
 
   // UnlockManager:
   bool IsUnlockAllowed() override;
   void SetRemoteDeviceLifeCycle(RemoteDeviceLifeCycle* life_cycle) override;
   void OnLifeCycleStateChanged() override;
   void OnAuthAttempted(
       ScreenlockBridge::LockHandler::AuthType auth_type) override;
 
  protected:
-  // Creates a ProximityMonitor instance for the given |remote_device|.
+  // Creates a ProximityMonitor instance for the given |connection|.
   // Exposed for testing.
   virtual std::unique_ptr<ProximityMonitor> CreateProximityMonitor(
-      const cryptauth::RemoteDevice& remote_device);
+      cryptauth::Connection* connection);
 
  private:
   // The possible lock screen states for the remote device.
   enum class RemoteScreenlockState {
     UNKNOWN,
     UNLOCKED,
     DISABLED,
     LOCKED,
   };
 
@@ skipping 114 matching lines @@
 
   // Used to vend all other weak pointers.
   base::WeakPtrFactory<UnlockManagerImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UnlockManagerImpl);
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_UNLOCK_MANAGER_IMPL_H