arc: bluetooth: Implement Gatt notify

components/arc/common/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 arc.mojom;
 
 [Extensible]
 enum BluetoothAdapterState {
   OFF = 0,
   ON
@@ skipping 303 matching lines @@
                                              bool connected);
   [MinVersion=1] OnSearchComplete@9(BluetoothAddress remote_addr,
                                     BluetoothGattStatus status);
   [MinVersion=1] OnGetGattDB@10(BluetoothAddress remote_addr,
                                 array<BluetoothGattDBElement> db);
   [MinVersion=1] OnServicesRemoved@11(BluetoothAddress remote_addr,
                                       uint16 start_handle,
                                       uint16 end_handle);
   [MinVersion=1] OnServicesAdded@12(BluetoothAddress remote_addr,
                                     array<BluetoothGattDBElement> db);
+  [MinVersion=2] OnGattNotify@13(BluetoothAddress remote_addr,
+                                 BluetoothGattServiceID service_id,
+                                 BluetoothGattID char_id,
+                                 bool is_notify,
+                                 array<uint8> value);
 };