[CrOS Tether]: Create BleConnectionManager, which manages secure connections between the current de…

components/cryptauth/ble/bluetooth_low_energy_weave_client_connection.h

 // Copyright 2015 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_CRYPTAUTH_BLE_BLUETOOTH_LOW_ENERGY_WEAVE_CLIENT_CONNECTION_H_
 #define COMPONENTS_CRYPTAUTH_BLE_BLUETOOTH_LOW_ENERGY_WEAVE_CLIENT_CONNECTION_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 37 matching lines @@
 // receive connection response      |
 // opt: send data                   | opt: send data
 // receive data                     | receive data
 // opt: close connection            | opt: close connection
 class BluetoothLowEnergyWeaveClientConnection
     : public Connection,
       public device::BluetoothAdapter::Observer {
  public:
   class Factory {
    public:
-    static std::unique_ptr<BluetoothLowEnergyWeaveClientConnection>
-    NewInstance(
+    static std::unique_ptr<Connection> NewInstance(
         const RemoteDevice& remote_device,
         const std::string& device_address,
         scoped_refptr<device::BluetoothAdapter> adapter,
         const device::BluetoothUUID remote_service_uuid,
         BluetoothThrottler* bluetooth_throttler);
 
     // Exposed for testing.
     static void SetInstanceForTesting(std::shared_ptr<Factory> factory);
 
    protected:
     // Exposed for testing.
-    virtual std::unique_ptr<BluetoothLowEnergyWeaveClientConnection>
-    BuildInstance(
+    virtual std::unique_ptr<Connection> BuildInstance(
         const RemoteDevice& remote_device,
         const std::string& device_address,
         scoped_refptr<device::BluetoothAdapter> adapter,
         const device::BluetoothUUID remote_service_uuid,
         BluetoothThrottler* bluetooth_throttler);
 
    private:
     static std::shared_ptr<Factory> factory_instance_;
   };
 
@@ skipping 235 matching lines @@
       weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothLowEnergyWeaveClientConnection);
 };
 
 }  // namespace weave
 
 }  // namespace cryptauth
 
 #endif  // COMPONENTS_CRYPTAUTH_BLE_BLUETOOTH_LOW_ENERGY_WEAVE_CLIENT_CONNECTION_H_