Implement BluetoothLowEnergyWrapperFake for Bluetooth test fixture

device/bluetooth/test/bluetooth_test_win.h

Index: device/bluetooth/test/bluetooth_test_win.h
diff --git a/device/bluetooth/test/bluetooth_test_win.h b/device/bluetooth/test/bluetooth_test_win.h
index 883a4fdb79bac985073e60c208339289226fdbb8..2fea2aca729450fe651e13d981bf0a67307dbe19 100644
--- a/device/bluetooth/test/bluetooth_test_win.h
+++ b/device/bluetooth/test/bluetooth_test_win.h
@@ -28,6 +28,8 @@ class BluetoothTestWin : public BluetoothTestBase {
   void InitWithoutDefaultAdapter() override;
   void InitWithFakeAdapter() override;
   bool DenyPermission() override;
+  void StartLowEnergyDiscoverySession() override;
+  BluetoothDevice* DiscoverLowEnergyDevice(int device_ordinal) override;
 
  private:
   scoped_refptr<base::TestSimpleTaskRunner> ui_task_runner_;