arc: bluetooth: Implement socket opening

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 269 matching lines @@
       BluetoothGattID char_id)
       => (BluetoothGattStatus status);
   [MinVersion=1] DeregisterForGattNotification@27(
       BluetoothAddress remote_addr,
       BluetoothGattServiceID service_id,
       BluetoothGattID char_id)
       => (BluetoothGattStatus status);
   [MinVersion=1] ReadRemoteRssi@28(BluetoothAddress remote_addr)
       => (int32 rssi);
 
+  [MinVersion=2] OpenBluetoothSocket@29()
+      => (handle sock);
 };
 
 interface BluetoothInstance {
   Init@0(BluetoothHost host_ptr);
 
   OnAdapterProperties@1(BluetoothStatus status,
                         array<BluetoothProperty> properties);
   OnRemoteDeviceProperties@2(BluetoothStatus status,
                              BluetoothAddress address,
                              array<BluetoothProperty> properties);
@@ skipping 20 matching lines @@
                                       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);
 };