Remove outdated devices from Android device chooser

device/bluetooth/bluetooth_adapter.h

 // Copyright (c) 2012 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_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_H_
 
 #include <stdint.h>
 
 #include <list>
@@ skipping 426 matching lines @@
       BluetoothRemoteGattCharacteristic* characteristic);
   void NotifyGattDescriptorAdded(BluetoothRemoteGattDescriptor* descriptor);
   void NotifyGattDescriptorRemoved(BluetoothRemoteGattDescriptor* descriptor);
   void NotifyGattCharacteristicValueChanged(
       BluetoothRemoteGattCharacteristic* characteristic,
       const std::vector<uint8_t>& value);
   void NotifyGattDescriptorValueChanged(
       BluetoothRemoteGattDescriptor* descriptor,
       const std::vector<uint8_t>& value);
 
+  // The timeout in seconds used by RemoveTimedOutDevices.
+  static const base::TimeDelta timeoutSec;
+
  protected:
   friend class base::RefCounted<BluetoothAdapter>;
   friend class BluetoothDiscoverySession;
   friend class BluetoothTestBase;
 
   typedef base::ScopedPtrHashMap<std::string, std::unique_ptr<BluetoothDevice>>
       DevicesMap;
   typedef std::pair<BluetoothDevice::PairingDelegate*, PairingDelegatePriority>
       PairingDelegatePair;
   typedef base::Callback<void(UMABluetoothDiscoverySessionOutcome)>
@@ skipping 75 matching lines @@
   void MarkDiscoverySessionsAsInactive();
 
   // Removes |discovery_session| from |discovery_sessions_|, if its in there.
   // Called by DiscoverySession when an instance is destroyed or becomes
   // inactive.
   void DiscoverySessionBecameInactive(
       BluetoothDiscoverySession* discovery_session);
 
   void DeleteDeviceForTesting(const std::string& address);
 
+  // Removes from |devices_| any previously paired, connected or seen
+  // devices which are no longer present. Notifies observers. Note:
+  // this is only used by platforms where there is no notification of
+  // lost devices.
+  void RemoveTimedOutDevices();
+
   // Observers of BluetoothAdapter, notified from implementation subclasses.
   base::ObserverList<device::BluetoothAdapter::Observer> observers_;
 
   // Devices paired with, connected to, discovered by, or visible to the
   // adapter. The key is the Bluetooth address of the device and the value is
   // the BluetoothDevice object whose lifetime is managed by the adapter
   // instance.
   DevicesMap devices_;
 
   // Default pairing delegates registered with the adapter.
@@ skipping 23 matching lines @@
   std::set<BluetoothDiscoverySession*> discovery_sessions_;
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<BluetoothAdapter> weak_ptr_factory_;
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_H_