[Bluetooth] Improve the adapter's awareness of connected devices.

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 <string>
@@ skipping 57 matching lines @@
       int psm,
       const CreateServiceCallback& callback,
       const CreateServiceErrorCallback& error_callback) OVERRIDE;
 
   // BluetoothDiscoveryManagerMac::Observer overrides
   virtual void DeviceFound(BluetoothDiscoveryManagerMac* manager,
                            IOBluetoothDevice* device) OVERRIDE;
   virtual void DiscoveryStopped(BluetoothDiscoveryManagerMac* manager,
                                 bool unexpected) OVERRIDE;
 
+  // Registers that a new |device| has connected to the local host.
+  void DeviceConnected(IOBluetoothDevice* device);
+
  protected:
   // BluetoothAdapter:
   virtual void RemovePairingDelegateInternal(
       device::BluetoothDevice::PairingDelegate* pairing_delegate) OVERRIDE;
 
  private:
   friend class BluetoothAdapterMacTest;
 
   BluetoothAdapterMac();
   virtual ~BluetoothAdapterMac();
 
   // BluetoothAdapter:
   virtual void AddDiscoverySession(
       const base::Closure& callback,
       const ErrorCallback& error_callback) OVERRIDE;
   virtual void RemoveDiscoverySession(
       const base::Closure& callback,
       const ErrorCallback& error_callback) OVERRIDE;
 
   void Init();
   void InitForTest(scoped_refptr<base::SequencedTaskRunner> ui_task_runner);
   void PollAdapter();
 
-  // Updates |devices_| to be consistent with |devices|.
-  void UpdateDevices(NSArray* devices);
+  // Updates |devices_| to include the currently paired devices, as well as any
+  // connected, but unpaired, devices. Notifies observers if any previously
+  // paired or connected devices are no longer present.
+  void UpdateDevices();
 
   std::string address_;
   std::string name_;
   bool powered_;
 
   int num_discovery_sessions_;
 
   // Discovery manager for Bluetooth Classic.
   scoped_ptr<BluetoothDiscoveryManagerMac> classic_discovery_manager_;
 
@@ skipping 12 matching lines @@
   ObserverList<BluetoothAdapter::Observer> observers_;
 
   base::WeakPtrFactory<BluetoothAdapterMac> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothAdapterMac);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_MAC_H_