Implement WebBluetooth descriptor.writeValue()

third_party/WebKit/public/platform/modules/bluetooth/web_bluetooth.mojom

 // 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.
 
 module blink.mojom;
 
 import "device/bluetooth/public/interfaces/uuid.mojom";
 
 // Bluetooth Terminology:
 //
@@ skipping 232 matching lines @@
 
   // Reads the value for the descriptor identified by
   // |descriptor_instance_id|. If the value is successfully read the callback
   // will be run with WebBluetoothResult::SUCCESS and the descriptor's value. If
   // the value is not successfully read the callback with be run with the
   // corresponding error and nullptr for value
   RemoteDescriptorReadValue(
     string descriptor_instance_id) => (
     WebBluetoothResult result,
     array<uint8>? value);
+
+  // Writes a value to the descriptor identified by
+  // |descriptor_instance_id|. The callback is run with
+  // WebBluetoothResult::SUCCESS if the value was successfully
+  // written.
+  RemoteDescriptorWriteValue(
+    string descriptor_instance_id,
+    array<uint8> value) => (WebBluetoothResult result);
 };
 
 // Classes should implement this interface and pass an associated pointer
 // bound to them to the WebBluetoothService by using SetClient. Classes
 // that do this will be notified of device events e.g. device disconnection.
 interface WebBluetoothServiceClient {
   // The characteristic identified by |characteristic_instance_id| has received
   // a notification of value change.
   RemoteCharacteristicValueChanged(string characteristic_instance_id,
                                    array<uint8> value);
 
   // The device identified by |device_id| has been disconnected.
   GattServerDisconnected(WebBluetoothDeviceId device_id);
 };