device: Cleanup class/struct forward declarations

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 18 matching lines @@
 
 class BluetoothAdvertisement;
 class BluetoothDiscoveryFilter;
 class BluetoothDiscoverySession;
 class BluetoothLocalGattService;
 class BluetoothRemoteGattCharacteristic;
 class BluetoothRemoteGattDescriptor;
 class BluetoothRemoteGattService;
 class BluetoothSocket;
 class BluetoothUUID;
-struct BluetoothAdapterDeleter;
 enum class UMABluetoothDiscoverySessionOutcome;
 
 // BluetoothAdapter represents a local Bluetooth adapter which may be used to
 // interact with remote Bluetooth devices. As well as providing support for
 // determining whether an adapter is present and whether the radio is powered,
 // this class also provides support for obtaining the list of remote devices
 // known to the adapter, discovering new devices, and providing notification of
 // updates to device information.
 class DEVICE_BLUETOOTH_EXPORT BluetoothAdapter
     : public base::RefCounted<BluetoothAdapter> {
@@ skipping 584 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_