[EasyUnlock] Add a private API for establishing an insecure Bluetooth connection.

device/bluetooth/bluetooth_device_chromeos.h

 // Copyright 2013 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_CHROMEOS_H
 #define DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_CHROMEOS_H
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 55 matching lines @@
       const device::BluetoothUUID& uuid,
       const ConnectToServiceCallback& callback,
       const ConnectToServiceErrorCallback& error_callback) OVERRIDE;
   virtual void CreateGattConnection(
       const GattConnectionCallback& callback,
       const ConnectErrorCallback& error_callback) OVERRIDE;
   virtual void StartConnectionMonitor(
       const base::Closure& callback,
       const ErrorCallback& error_callback) OVERRIDE;
 
+  // Attempts to initiate an insecure outgoing L2CAP or RFCOMM connection to the
+  // advertised service on this device matching |uuid|, performing an SDP lookup
+  // if necessary to determine the correct protocol and channel for the
+  // connection. Unlike ConnectToService, the outgoing connection will request
+  // no bonding rather than general bonding. |callback| will be called on a
+  // successful connection with a BluetoothSocket instance that is to be owned
+  // by the receiver. |error_callback| will be called on failure with a message
+  // indicating the cause.
+  void ConnectToServiceInsecurely(
+    const device::BluetoothUUID& uuid,
+    const ConnectToServiceCallback& callback,
+    const ConnectToServiceErrorCallback& error_callback);
+
   // Creates a pairing object with the given delegate |pairing_delegate| and
   // establishes it as the pairing context for this device. All pairing-related
   // method calls will be forwarded to this object until it is released.
   BluetoothPairingChromeOS* BeginPairing(
       BluetoothDevice::PairingDelegate* pairing_delegate);
 
   // Releases the current pairing object, any pairing-related method calls will
   // be ignored.
   void EndPairing();
 
@@ skipping 100 matching lines @@
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<BluetoothDeviceChromeOS> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothDeviceChromeOS);
 };
 
 }  // namespace chromeos
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_CHROMEOS_H