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

device/bluetooth/bluetooth_socket_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_SOCKET_CHROMEOS_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_CHROMEOS_H_
 
 #include <queue>
 #include <string>
 
@@ skipping 16 matching lines @@
 
 class BluetoothDeviceChromeOS;
 
 // The BluetoothSocketChromeOS class implements BluetoothSocket for the
 // Chrome OS platform.
 class CHROMEOS_EXPORT BluetoothSocketChromeOS
     : public device::BluetoothSocketNet,
       public device::BluetoothAdapter::Observer,
       public BluetoothProfileServiceProvider::Delegate {
  public:
+  enum SecurityLevel {
+    SECURITY_LEVEL_LOW,
+    SECURITY_LEVEL_MEDIUM
+  };
+
   static scoped_refptr<BluetoothSocketChromeOS> CreateBluetoothSocket(
       scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
       scoped_refptr<device::BluetoothSocketThread> socket_thread);
 
   // Connects this socket to the service on |device| published as UUID |uuid|,
   // the underlying protocol and PSM or Channel is obtained through service
   // discovery. On a successful connection the socket properties will be updated
   // and |success_callback| called. On failure |error_callback| will be called
   // with a message explaining the cause of the failure.
   virtual void Connect(const BluetoothDeviceChromeOS* device,
                        const device::BluetoothUUID& uuid,
+                       SecurityLevel security_level,
                        const base::Closure& success_callback,
                        const ErrorCompletionCallback& error_callback);
 
   // Listens using this socket using a service published on |adapter|. The
   // service is either RFCOMM or L2CAP depending on |socket_type| and published
   // as UUID |uuid|. The |service_options| argument is interpreted according to
   // |socket_type|. |success_callback| will be called if the service is
   // successfully registered, |error_callback| on failure with a message
   // explaining the cause.
   enum SocketType { kRfcomm, kL2cap };
@@ skipping 138 matching lines @@
     bool cancelled;
   };
   std::queue<linked_ptr<ConnectionRequest> > connection_request_queue_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothSocketChromeOS);
 };
 
 }  // namespace chromeos
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_CHROMEOS_H_