Tether: Break helper TimerFactory out of BleConnectionManager and HostScanCache.

chromeos/components/tether/ble_connection_manager.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_BLE_CONNECTION_MANAGER_H_
 #define CHROMEOS_COMPONENTS_TETHER_BLE_CONNECTION_MANAGER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 11 matching lines @@
 
 namespace cryptauth {
 class BluetoothThrottler;
 class CryptAuthService;
 }  // namespace cryptauth
 
 namespace chromeos {
 
 namespace tether {
 
+class TimerFactory;
+
 // Manages connections to remote devices. When a device is registered,
 // BleConnectionManager intiates a connection to that device. If the connection
 // succeeds and authenticates successfully, messages can be sent/received
 // to/from the device. If the connection does not succeed, BleConnectionManager
 // continues attempting connections until a connection is established or the
 // device is unregistered.
 //
 // To use this class, construct an instance and observe it via AddObserver().
 // Then, register device(s) to connect to via RegisterRemoteDevice() and wait
 // for the OnSecureChannelStatusChanged() callback to be invoked. If the
@@ skipping 60 matching lines @@
 
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   // BleScanner::Observer:
   void OnReceivedAdvertisementFromDevice(
       const std::string& device_address,
       cryptauth::RemoteDevice remote_device) override;
 
  protected:
-  class TimerFactory {
-   public:
-    virtual std::unique_ptr<base::Timer> CreateTimer();
-  };
-
   BleConnectionManager(
       cryptauth::CryptAuthService* cryptauth_service,
       scoped_refptr<device::BluetoothAdapter> adapter,
       std::unique_ptr<BleScanner> ble_scanner,
       std::unique_ptr<BleAdvertiser> ble_advertiser,
       std::unique_ptr<BleAdvertisementDeviceQueue> device_queue,
       std::unique_ptr<TimerFactory> timer_factory,
       cryptauth::BluetoothThrottler* bluetooth_throttler);
 
   void SendMessageReceivedEvent(const cryptauth::RemoteDevice& remote_device,
@@ skipping 92 matching lines @@
   base::WeakPtrFactory<BleConnectionManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BleConnectionManager);
 };
 
 }  // namespace tether
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_COMPONENTS_TETHER_BLE_CONNECTION_MANAGER_H_