[CrOS Tether] Create TetherHostResponseRecorder, which records ConnectTetheringResponses and Tether…

chromeos/components/tether/connect_tethering_operation.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 CHROMEOS_COMPONENTS_TETHER_CONNECT_TETHERING_OPERATION_H_
 #define CHROMEOS_COMPONENTS_TETHER_CONNECT_TETHERING_OPERATION_H_
 
 #include <map>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "chromeos/components/tether/ble_connection_manager.h"
 #include "chromeos/components/tether/message_transfer_operation.h"
 #include "components/cryptauth/remote_device.h"
 
 namespace chromeos {
 
 namespace tether {
 
-class HostScanDevicePrioritizer;
 class MessageWrapper;
+class TetherHostResponseRecorder;
 
 // Operation used to request that a tether host share its Internet connection.
 // Attempts a connection to the RemoteDevice passed to its constructor and
 // notifies observers when the RemoteDevice sends a response.
 // TODO(khorimoto): Add a timeout which gives up if no response is received in
 // a reasonable amount of time.
 class ConnectTetheringOperation : public MessageTransferOperation {
  public:
   class Factory {
    public:
     static std::unique_ptr<ConnectTetheringOperation> NewInstance(
         const cryptauth::RemoteDevice& device_to_connect,
         BleConnectionManager* connection_manager,
-        HostScanDevicePrioritizer* host_scan_device_prioritizer);
+        TetherHostResponseRecorder* tether_host_response_recorder);
 
     static void SetInstanceForTesting(Factory* factory);
 
    protected:
     virtual std::unique_ptr<ConnectTetheringOperation> BuildInstance(
         const cryptauth::RemoteDevice& devices_to_connect,
         BleConnectionManager* connection_manager,
-        HostScanDevicePrioritizer* host_scan_device_prioritizer);
+        TetherHostResponseRecorder* tether_host_response_recorder);
 
    private:
     static Factory* factory_instance_;
   };
 
   class Observer {
    public:
     virtual void OnSuccessfulConnectTetheringResponse(
         const cryptauth::RemoteDevice& remote_device,
         const std::string& ssid,
         const std::string& password) = 0;
     virtual void OnConnectTetheringFailure(
         const cryptauth::RemoteDevice& remote_device,
         ConnectTetheringResponse_ResponseCode error_code) = 0;
   };
 
   ConnectTetheringOperation(
       const cryptauth::RemoteDevice& device_to_connect,
       BleConnectionManager* connection_manager,
-      HostScanDevicePrioritizer* host_scan_device_prioritizer);
+      TetherHostResponseRecorder* tether_host_response_recorder);
   ~ConnectTetheringOperation() override;
 
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
  protected:
   // MessageTransferOperation:
   void OnDeviceAuthenticated(
       const cryptauth::RemoteDevice& remote_device) override;
   void OnMessageReceived(std::unique_ptr<MessageWrapper> message_wrapper,
                          const cryptauth::RemoteDevice& remote_device) override;
   void OnOperationFinished() override;
   MessageType GetMessageTypeForConnection() override;
   void NotifyObserversOfSuccessfulResponse(const std::string& ssid,
                                            const std::string& password);
   void NotifyObserversOfConnectionFailure(
       ConnectTetheringResponse_ResponseCode error_code);
 
  private:
   friend class ConnectTetheringOperationTest;
 
   cryptauth::RemoteDevice remote_device_;
-  HostScanDevicePrioritizer* host_scan_device_prioritizer_;
+  TetherHostResponseRecorder* tether_host_response_recorder_;
 
   // These values are saved in OnMessageReceived() and returned in
   // OnOperationFinished().
   std::string ssid_to_return_;
   std::string password_to_return_;
   ConnectTetheringResponse_ResponseCode error_code_to_return_;
 
   base::ObserverList<Observer> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(ConnectTetheringOperation);
 };
 
 }  // namespace tether
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_COMPONENTS_TETHER_CONNECT_TETHERING_OPERATION_H_