Remove outdated devices from Android device chooser

device/bluetooth/bluetooth_adapter_mac.h

 // Copyright 2013 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 DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_MAC_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_MAC_H_
 
 #include <IOKit/IOReturn.h>
 
 #include <memory>
@@ skipping 150 matching lines @@
   void ClassicDeviceAdded(IOBluetoothDevice* device);
 
   // BluetoothLowEnergyDiscoveryManagerMac::Observer override:
   void LowEnergyDeviceUpdated(CBPeripheral* peripheral,
                               NSDictionary* advertisement_data,
                               int rssi) override;
 
   // Updates |devices_| when there is a change to the CBCentralManager's state.
   void LowEnergyCentralManagerUpdatedState();
 
-  // Removes from |devices_| any previously paired, connected or seen devices
-  // which are no longer present. Notifies observers.
-  void RemoveTimedOutDevices();
-
   // Updates |devices_| to include the currently paired devices and notifies
   // observers.
   void AddPairedDevices();
 
   // Returns the BLE device associated with the CoreBluetooth peripheral.
   BluetoothLowEnergyDeviceMac* GetBluetoothLowEnergyDeviceMac(
       CBPeripheral* peripheral);
 
   std::string address_;
   std::string name_;
@@ skipping 15 matching lines @@
   scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
 
   base::WeakPtrFactory<BluetoothAdapterMac> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothAdapterMac);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_MAC_H_