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

chromeos/components/tether/host_scanner_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_HOST_SCANNER_OPERATION_H_
 #define CHROMEOS_COMPONENTS_TETHER_HOST_SCANNER_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 perform a host scan. Attempts to connect to each of the
 // devices passed and sends a TetherAvailabilityRequest to each connected device
 // once an authenticated channel has been established; once a response has been
 // received, HostScannerOperation alerts observers of devices which can provide
 // a tethering connection.
 // TODO(khorimoto): Add a timeout which gives up if no response is received in
 // a reasonable amount of time.
 class HostScannerOperation : public MessageTransferOperation {
  public:
   class Factory {
    public:
     static std::unique_ptr<HostScannerOperation> NewInstance(
         const std::vector<cryptauth::RemoteDevice>& devices_to_connect,
         BleConnectionManager* connection_manager,
-        HostScanDevicePrioritizer* host_scan_device_prioritizer);
+        HostScanDevicePrioritizer* host_scan_device_prioritizer,
+        TetherHostResponseRecorder* tether_host_response_recorder);
 
     static void SetInstanceForTesting(Factory* factory);
 
    protected:
     virtual std::unique_ptr<HostScannerOperation> BuildInstance(
         const std::vector<cryptauth::RemoteDevice>& devices_to_connect,
         BleConnectionManager* connection_manager,
-        HostScanDevicePrioritizer* host_scan_device_prioritizer);
+        HostScanDevicePrioritizer* host_scan_device_prioritizer,
+        TetherHostResponseRecorder* tether_host_response_recorder);
 
    private:
     static Factory* factory_instance_;
   };
 
   struct ScannedDeviceInfo {
     ScannedDeviceInfo(const cryptauth::RemoteDevice& remote_device,
                       const DeviceStatus& device_status,
                       bool set_up_required);
     ~ScannedDeviceInfo();
@@ skipping 13 matching lines @@
     // processed, the callback is invoked one final time with
     // |is_final_scan_result| = true.
     virtual void OnTetherAvailabilityResponse(
         std::vector<ScannedDeviceInfo>& scanned_device_list_so_far,
         bool is_final_scan_result) = 0;
   };
 
   HostScannerOperation(
       const std::vector<cryptauth::RemoteDevice>& devices_to_connect,
       BleConnectionManager* connection_manager,
-      HostScanDevicePrioritizer* host_scan_device_prioritizer);
+      HostScanDevicePrioritizer* host_scan_device_prioritizer,
+      TetherHostResponseRecorder* tether_host_response_recorder);
   ~HostScannerOperation() override;
 
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
  protected:
   void NotifyObserversOfScannedDeviceList(bool is_final_scan_result);
 
   // MessageTransferOperation:
   void OnDeviceAuthenticated(
       const cryptauth::RemoteDevice& remote_device) override;
   void OnMessageReceived(std::unique_ptr<MessageWrapper> message_wrapper,
                          const cryptauth::RemoteDevice& remote_device) override;
   void OnOperationStarted() override;
   void OnOperationFinished() override;
   MessageType GetMessageTypeForConnection() override;
 
   std::vector<ScannedDeviceInfo> scanned_device_list_so_far_;
 
  private:
   friend class HostScannerOperationTest;
 
-  HostScanDevicePrioritizer* host_scan_device_prioritizer_;
+  TetherHostResponseRecorder* tether_host_response_recorder_;
   base::ObserverList<Observer> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(HostScannerOperation);
 };
 
 }  // namespace tether
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_COMPONENTS_TETHER_HOST_SCANNER_OPERATION_H_