Using the GATT connection address instead of cached remote_device().

components/proximity_auth/ble/bluetooth_low_energy_connection.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_BLUETOOTH_LOW_ENERGY_CONNECTION_H
 #define COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_LOW_ENERGY_CONNECTION_H
 
 #include <queue>
 #include <string>
 
@@ skipping 204 matching lines @@
   // Builds the value to be written on |to_peripheral_char_|. The value
   // corresponds to |signal| concatenated with |payload|.
   WriteRequest BuildWriteRequest(const std::vector<uint8>& signal,
                                  const std::vector<uint8>& bytes,
                                  bool is_last_message_for_wire_message);
 
   // Clears |write_requests_queue_|.
   void ClearWriteRequestsQueue();
 
   // Returns the Bluetooth address of the remote device.
-  const std::string& GetRemoteDeviceAddress();
+  std::string GetRemoteDeviceAddress();
 
   // Returns the device corresponding to |remote_device_address_|.
   device::BluetoothDevice* GetRemoteDevice();
 
   // Returns the service corresponding to |remote_service_| in the current
   // device.
   device::BluetoothGattService* GetRemoteService();
 
   // Returns the characteristic corresponding to |identifier| in the current
   // service.
@@ skipping 72 matching lines @@
   base::TimeDelta delay_after_gatt_connection_;
 
   base::WeakPtrFactory<BluetoothLowEnergyConnection> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothLowEnergyConnection);
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_LOW_ENERGY_CONNECTION_H