device: Cleanup class/struct forward declarations

device/bluetooth/dbus/fake_bluetooth_gatt_application_service_provider.h

 // Copyright 2016 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_DBUS_FAKE_BLUETOOTH_GATT_APPLICATION_SERVICE_PROVIDER_H_
 #define DEVICE_BLUETOOTH_DBUS_FAKE_BLUETOOTH_GATT_APPLICATION_SERVICE_PROVIDER_H_
 
 #include <map>
 #include <vector>
 
 #include "base/macros.h"
 #include "dbus/object_path.h"
 #include "device/bluetooth/bluetooth_export.h"
 #include "device/bluetooth/bluez/bluetooth_local_gatt_service_bluez.h"
 #include "device/bluetooth/dbus/bluetooth_gatt_application_service_provider.h"
 #include "device/bluetooth/dbus/bluetooth_gatt_characteristic_service_provider.h"
 #include "device/bluetooth/dbus/bluetooth_gatt_descriptor_service_provider.h"
 #include "device/bluetooth/dbus/bluetooth_gatt_service_service_provider.h"
 
 namespace bluez {
 
-class BluetoothLocalGattCharacteristicBlueZ;
-class BluetoothLocalGattDescriptorBlueZ;
 class BluetoothLocalGattServiceBlueZ;
 
 // FakeBluetoothGattApplicationServiceProvider simulates behavior of a local
 // GATT service object and is used both in test cases in place of a mock and on
 // the Linux desktop.
 class DEVICE_BLUETOOTH_EXPORT FakeBluetoothGattApplicationServiceProvider
     : public BluetoothGattApplicationServiceProvider {
  public:
   FakeBluetoothGattApplicationServiceProvider(
       const dbus::ObjectPath& object_path,
       const std::map<dbus::ObjectPath, BluetoothLocalGattServiceBlueZ*>&
           services);
   ~FakeBluetoothGattApplicationServiceProvider() override;
 
   const dbus::ObjectPath& object_path() const { return object_path_; }
 
  private:
   // D-Bus object path of the fake GATT service.
   dbus::ObjectPath object_path_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeBluetoothGattApplicationServiceProvider);
 };
 
 }  // namespace bluez
 
 #endif  // DEVICE_BLUETOOTH_DBUS_FAKE_BLUETOOTH_GATT_APPLICATION_SERVICE_PROVIDER_H_