Implemented BluetoothAdapterWin::IsPresent().

device/bluetooth/bluetooth_adapter_win.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_WIN_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_WIN_H_
 
 #include <string>
 
 #include "base/memory/weak_ptr.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 
 namespace device {
 
 class BluetoothAdapterFactory;
 class BluetoothDevice;
 
 class BluetoothAdapterWin : public BluetoothAdapter {
+ public:
   // BluetoothAdapter override
   virtual void AddObserver(BluetoothAdapter::Observer* observer) OVERRIDE;
   virtual void RemoveObserver(BluetoothAdapter::Observer* observer) OVERRIDE;
   virtual bool IsPresent() const OVERRIDE;
   virtual bool IsPowered() const OVERRIDE;
   virtual void SetPowered(
       bool powered,
       const base::Closure& callback,
       const ErrorCallback& error_callback) OVERRIDE;
   virtual bool IsDiscovering() const OVERRIDE;
   virtual void SetDiscovering(
       bool discovering,
       const base::Closure& callback,
       const ErrorCallback& error_callback) OVERRIDE;
   virtual ConstDeviceList GetDevices() const OVERRIDE;
   virtual BluetoothDevice* GetDevice(const std::string& address) OVERRIDE;
   virtual const BluetoothDevice* GetDevice(
       const std::string& address) const OVERRIDE;
   virtual void ReadLocalOutOfBandPairingData(
       const BluetoothOutOfBandPairingDataCallback& callback,
       const ErrorCallback& error_callback) OVERRIDE;
 
  private:
   friend class device::BluetoothAdapterFactory;
 
   BluetoothAdapterWin();
   virtual ~BluetoothAdapterWin();
 
+  // Obtains the default adapter info (the first bluetooth radio info) and
+  // tracks future changes to it.
+  void TrackDefaultAdapter();
+
+  void UpdateAdapterState();
+
   // 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<BluetoothAdapterWin> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothAdapterWin);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_WIN_H_