cros: Move TrayBluetoothHelper out of chrome into ash

chrome/browser/ui/ash/tray_bluetooth_helper.h

-// Copyright 2017 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 CHROME_BROWSER_UI_ASH_TRAY_BLUETOOTH_HELPER_H_
-#define CHROME_BROWSER_UI_ASH_TRAY_BLUETOOTH_HELPER_H_
-
-#include <memory>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "device/bluetooth/bluetooth_adapter.h"
-
-namespace ash {
-struct BluetoothDeviceInfo;
-}
-
-namespace device {
-class BluetoothDiscoverySession;
-}
-
-// Maps UI concepts from the Bluetooth system tray (e.g. "Bluetooth is on") into
-// device concepts ("Bluetooth adapter enabled"). Note that most Bluetooth
-// device operations are asynchronous, hence the two step initialization.
-// TODO(jamescook): Move into //ash/system next to TrayBluetooth. This isn't
-// named "delegate" because long-term there should not be any delegation.
-class TrayBluetoothHelper : public device::BluetoothAdapter::Observer {
- public:
-  TrayBluetoothHelper();
-  ~TrayBluetoothHelper() override;
-
-  // Called after SystemTray has been instantiated.
-  void Initialize();
-
-  // Completes initialization after the Bluetooth adapter is ready.
-  void InitializeOnAdapterReady(
-      scoped_refptr<device::BluetoothAdapter> adapter);
-
-  // Returns a list of available bluetooth devices.
-  // TODO(jamescook): Just return the list.
-  void GetAvailableDevices(std::vector<ash::BluetoothDeviceInfo>* list);
-
-  // Requests bluetooth start discovering devices, which happens asynchronously.
-  void StartDiscovering();
-
-  // Requests bluetooth stop discovering devices.
-  void StopDiscovering();
-
-  // Connect to a specific bluetooth device.
-  void ConnectToDevice(const std::string& address);
-
-  // Returns true if bluetooth adapter is discovering bluetooth devices.
-  bool IsDiscovering() const;
-
-  // Toggles whether bluetooth is enabled.
-  void ToggleEnabled();
-
-  // Returns whether bluetooth capability is available (e.g. the device has
-  // hardware support).
-  bool GetAvailable();
-
-  // Returns whether bluetooth is enabled.
-  bool GetEnabled();
-
-  // Returns whether the delegate has initiated a bluetooth discovery session.
-  // TODO(jamescook): Why do we need both this and IsDiscovering()?
-  bool HasDiscoverySession();
-
-  // BluetoothAdapter::Observer:
-  void AdapterPresentChanged(device::BluetoothAdapter* adapter,
-                             bool present) override;
-  void AdapterPoweredChanged(device::BluetoothAdapter* adapter,
-                             bool powered) override;
-  void AdapterDiscoveringChanged(device::BluetoothAdapter* adapter,
-                                 bool discovering) override;
-  void DeviceAdded(device::BluetoothAdapter* adapter,
-                   device::BluetoothDevice* device) override;
-  void DeviceChanged(device::BluetoothAdapter* adapter,
-                     device::BluetoothDevice* device) override;
-  void DeviceRemoved(device::BluetoothAdapter* adapter,
-                     device::BluetoothDevice* device) override;
-
- private:
-  void OnStartDiscoverySession(
-      std::unique_ptr<device::BluetoothDiscoverySession> discovery_session);
-
-  bool should_run_discovery_ = false;
-  scoped_refptr<device::BluetoothAdapter> adapter_;
-  std::unique_ptr<device::BluetoothDiscoverySession> discovery_session_;
-
-  // Object could be deleted during a prolonged Bluetooth operation.
-  base::WeakPtrFactory<TrayBluetoothHelper> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(TrayBluetoothHelper);
-};
-
-#endif  // CHROME_BROWSER_UI_ASH_TRAY_BLUETOOTH_HELPER_H_