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.
 
 // Next MinVersion: 5
 
 module arc.mojom;
 
 [Extensible]
 enum BluetoothAdapterState {
@@ skipping 299 matching lines @@
       => (BluetoothGattStatus status);
   [MinVersion=3] StopService@34(int32 service_handle)
       => (BluetoothGattStatus status);
   [MinVersion=3] DeleteService@35(int32 service_handle)
       => (BluetoothGattStatus status);
   [MinVersion=3] SendIndication@36(int32 attribute_handle,
                                    BluetoothAddress address,
                                    bool confirm,
                                    array<uint8> value)
       => (BluetoothGattStatus status);
+
+  [MinVersion=2] OpenBluetoothSocket@29()
+      => (handle sock);
 };
 
 // Next Method ID: 17
 interface BluetoothInstance {
   Init@0(BluetoothHost host_ptr);
 
   OnAdapterProperties@1(BluetoothStatus status,
                         array<BluetoothProperty> properties);
   OnRemoteDeviceProperties@2(BluetoothStatus status,
                              BluetoothAddress address,
@@ skipping 35 matching lines @@
                                     int32 attribute_handle,
                                     int32 offset,
                                     bool is_long)
       => (BluetoothGattStatus status, array<uint8> value);
   [MinVersion=3] RequestGattWrite@15(BluetoothAddress address,
                                      int32 attribute_handle,
                                      int32 offset,
                                      array<uint8> value)
       => (BluetoothGattStatus status);
 };