[Chrome OS Bootstrapping]: Do not always power off the Bluetooth adapter.

components/pairing/bluetooth_host_pairing_controller.h

 // Copyright 2014 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_PAIRING_BLUETOOTH_HOST_PAIRING_CONTROLLER_H_
 #define COMPONENTS_PAIRING_BLUETOOTH_HOST_PAIRING_CONTROLLER_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/threading/thread_checker.h"
 #include "components/pairing/host_pairing_controller.h"
 #include "components/pairing/proto_decoder.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_socket.h"
+#include "device/hid/input_service_linux.h"
 
 namespace device {
 class BluetoothAdapter;
 }
 
 namespace net {
 class IOBuffer;
 }
 
 namespace pairing_chromeos {
 
 class BluetoothHostPairingController
     : public HostPairingController,
       public ProtoDecoder::Observer,
       public device::BluetoothAdapter::Observer,
       public device::BluetoothDevice::PairingDelegate {
  public:
-  typedef HostPairingController::Observer Observer;
+  using Observer = HostPairingController::Observer;
+  using InputDeviceInfo = device::InputServiceLinux::InputDeviceInfo;
 
-  BluetoothHostPairingController();
+  explicit BluetoothHostPairingController(
+      const scoped_refptr<base::SingleThreadTaskRunner>& file_task_runner);
   ~BluetoothHostPairingController() override;
 
  private:
   void ChangeStage(Stage new_stage);
   void SendHostStatus();
   void Reset();
 
   void OnGetAdapter(scoped_refptr<device::BluetoothAdapter> adapter);
   void SetName();
   void OnSetName();
   void OnSetPowered();
   void OnCreateService(scoped_refptr<device::BluetoothSocket> socket);
   void OnSetDiscoverable(bool change_stage);
   void OnAccept(const device::BluetoothDevice* device,
                 scoped_refptr<device::BluetoothSocket> socket);
   void OnSendComplete(int bytes_sent);
   void OnReceiveComplete(int bytes, scoped_refptr<net::IOBuffer> io_buffer);
 
   void OnCreateServiceError(const std::string& message);
   void OnSetError();
   void OnAcceptError(const std::string& error_message);
   void OnSendError(const std::string& error_message);
   void OnReceiveError(device::BluetoothSocket::ErrorReason reason,
                       const std::string& error_message);
+  void PowerOffAdapterIfApplicable(const std::vector<InputDeviceInfo>& devices);
 
   // HostPairingController:
   void AddObserver(Observer* observer) override;
   void RemoveObserver(Observer* observer) override;
   Stage GetCurrentStage() override;
   void StartPairing() override;
   std::string GetDeviceName() override;
   std::string GetConfirmationCode() override;
   std::string GetEnrollmentDomain() override;
   void OnNetworkConnectivityChanged(Connectivity connectivity_status) override;
@@ skipping 35 matching lines @@
   UpdateStatus update_status_;
   EnrollmentStatus enrollment_status_;
   std::string permanent_id_;
   bool was_powered_ = false;
 
   scoped_refptr<device::BluetoothAdapter> adapter_;
   scoped_refptr<device::BluetoothSocket> service_socket_;
   scoped_refptr<device::BluetoothSocket> controller_socket_;
   std::unique_ptr<ProtoDecoder> proto_decoder_;
 
+  scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_;
   base::ThreadChecker thread_checker_;
   base::ObserverList<Observer> observers_;
   base::WeakPtrFactory<BluetoothHostPairingController> ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothHostPairingController);
 };
 
 }  // namespace pairing_chromeos
 
 #endif  // COMPONENTS_PAIRING_BLUETOOTH_HOST_PAIRING_CONTROLLER_H_