Adding unit tests for BLE connection.

components/proximity_auth/ble/bluetooth_low_energy_characteristics_finder.cc

 // 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.
 
 #include "components/proximity_auth/ble/bluetooth_low_energy_characteristics_finder.h"
 
 #include "device/bluetooth/bluetooth_adapter.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_gatt_characteristic.h"
 #include "device/bluetooth/bluetooth_uuid.h"
@@ skipping 27 matching lines @@
     return;
   }
 
   adapter_->AddObserver(this);
   ScanRemoteCharacteristics(device, remote_service_.uuid);
 
   // TODO(sacomoto): implement a timeout for characteristic discovery.
 }
 
 BluetoothLowEnergyCharacteristicsFinder::
+    BluetoothLowEnergyCharacteristicsFinder() {
+}
+
+BluetoothLowEnergyCharacteristicsFinder::
     ~BluetoothLowEnergyCharacteristicsFinder() {
   ResetCallbacks();
   if (adapter_) {
     adapter_->RemoveObserver(this);
     adapter_ = NULL;
   }
 }
 
 void BluetoothLowEnergyCharacteristicsFinder::GattCharacteristicAdded(
     BluetoothAdapter* adapter,
@@ skipping 62 matching lines @@
       remote_service_.id = service->GetIdentifier();
   }
 }
 
 void BluetoothLowEnergyCharacteristicsFinder::ResetCallbacks() {
   success_callback_.Reset();
   error_callback_.Reset();
 }
 
 }  // namespace proximity_auth