Revert of Implementing a BLE connection finder.

components/proximity_auth/ble/bluetooth_low_energy_connection_finder.h

-// Copyright 2015 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 COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_LOW_ENERGY_CONNECTION_FINDER_H
-#define COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_LOW_ENERGY_CONNECTION_FINDER_H
-
-#include <string>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "components/proximity_auth/connection_finder.h"
-#include "device/bluetooth/bluetooth_adapter.h"
-#include "device/bluetooth/bluetooth_device.h"
-#include "device/bluetooth/bluetooth_discovery_session.h"
-#include "device/bluetooth/bluetooth_gatt_connection.h"
-
-namespace proximity_auth {
-
-// This ConnectionFinder implementation is specialized in finding a Bluetooth
-// Low Energy remote device.
-class BluetoothLowEnergyConnectionFinder
-    : public ConnectionFinder,
-      public device::BluetoothAdapter::Observer {
- public:
-  BluetoothLowEnergyConnectionFinder(const std::string& remote_service_uuid);
-  ~BluetoothLowEnergyConnectionFinder() override;
-
-  // Finds a connection the remote device, only the first one is functional.
-  void Find(const device::BluetoothDevice::GattConnectionCallback&
-                connection_callback);
-  void Find(const ConnectionCallback& connection_callback) override;
-
- protected:
-  // Observer for device::BluetoothAdapter::Observer
-  void DeviceAdded(device::BluetoothAdapter* adapter,
-                   device::BluetoothDevice* device) override;
-
- private:
-  // Callback to be called when the Bluetooth adapter is initialized.
-  void OnAdapterInitialized(scoped_refptr<device::BluetoothAdapter> adapter);
-
-  // Checks if |remote_device| contains |remote_service_uuid| and creates a
-  // connection in that case.
-  void HandleDeviceAdded(device::BluetoothDevice* remote_device);
-
-  // Callback called when a new discovery session is started.
-  void OnDiscoverySessionStarted(
-      scoped_ptr<device::BluetoothDiscoverySession> discovery_session);
-
-  // Callback called when there is an error starting a new discovery session.
-  void OnStartDiscoverySessionError();
-
-  // Starts a discovery session for |adapter_|.
-  void StartDiscoverySession();
-
-  // Callback called when |discovery_session_| is stopped.
-  void OnDiscoverySessionStopped();
-
-  // Callback called when there is an error stopping |discovery_session_|.
-  void OnStopDiscoverySessionError();
-
-  // Stops the discovery session given by |discovery_session_|.
-  void StopDiscoverySession();
-
-  // Checks if a service with |service_uuid| is offered by |remote_device|.
-  bool HasService(device::BluetoothDevice* remote_device);
-
-  // Callback called when there is an error creating the connection.
-  void OnCreateConnectionError(
-      device::BluetoothDevice::ConnectErrorCode error_code);
-
-  // Callback called when the connection is created.
-  void OnConnectionCreated(
-      scoped_ptr<device::BluetoothGattConnection> connection);
-
-  // Creates a GATT connection with |remote_device|, |connection_callback_| will
-  // be called once the connection is established.
-  void CreateConnection(device::BluetoothDevice* remote_device);
-
-  // The uuid of the service it looks for to establish a GattConnection.
-  device::BluetoothUUID remote_service_uuid_;
-
-  // The Bluetooth adapter over which the Bluetooth connection will be made.
-  scoped_refptr<device::BluetoothAdapter> adapter_;
-
-  // The discovery session associated to this object.
-  scoped_ptr<device::BluetoothDiscoverySession> discovery_session_;
-
-  // True if there is a connection.
-  bool connected_;
-
-  // Callback called when the connection is established.
-  device::BluetoothDevice::GattConnectionCallback connection_callback_;
-
-  base::WeakPtrFactory<BluetoothLowEnergyConnectionFinder> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(BluetoothLowEnergyConnectionFinder);
-};
-
-}  // namespace proximity_auth
-
-#endif  // COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_CONNECTION_FINDER_H