Implement WebBluetooth getDescriptor[s]

device/bluetooth/bluetooth_device.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_DEVICE_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 14 matching lines @@
 #include "device/bluetooth/bluetooth_common.h"
 #include "device/bluetooth/bluetooth_export.h"
 #include "device/bluetooth/bluetooth_remote_gatt_service.h"
 #include "device/bluetooth/bluetooth_uuid.h"
 
 namespace device {
 
 class BluetoothAdapter;
 class BluetoothGattConnection;
 class BluetoothRemoteGattCharacteristic;
+class BluetoothRemoteGattDescriptor;
 class BluetoothSocket;
 class BluetoothUUID;
 
 // BluetoothDevice represents a remote Bluetooth device, both its properties and
 // capabilities as discovered by a local adapter and actions that may be
 // performed on the remove device such as pairing, connection and disconnection.
 //
 // The class is instantiated and managed by the BluetoothAdapter class
 // and pointers should only be obtained from that class and not cached,
 // instead use the GetAddress() method as a unique key for a device.
@@ skipping 513 matching lines @@
 
   std::vector<BluetoothRemoteGattService*> GetPrimaryServices();
 
   std::vector<BluetoothRemoteGattService*> GetPrimaryServicesByUUID(
       const BluetoothUUID& service_uuid);
 
   std::vector<BluetoothRemoteGattCharacteristic*> GetCharacteristicsByUUID(
       const std::string& service_instance_id,
       const BluetoothUUID& characteristic_uuid);
 
+  std::vector<device::BluetoothRemoteGattDescriptor*> GetDescriptorsByUUID(
+      device::BluetoothRemoteGattCharacteristic* characteristic,
+      const BluetoothUUID& descriptor_uuid);
+
  protected:
   // BluetoothGattConnection is a friend to call Add/RemoveGattConnection.
   friend BluetoothGattConnection;
   FRIEND_TEST_ALL_PREFIXES(
       BluetoothTest,
       BluetoothGattConnection_DisconnectGatt_SimulateConnect);
   FRIEND_TEST_ALL_PREFIXES(
       BluetoothTest,
       BluetoothGattConnection_DisconnectGatt_SimulateDisconnect);
   FRIEND_TEST_ALL_PREFIXES(BluetoothTest,
@@ skipping 108 matching lines @@
   // Returns a localized string containing the device's bluetooth address and
   // a device type for display when |name_| is empty.
   base::string16 GetAddressWithLocalizedDeviceTypeName() const;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothDevice);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_H_