Refactor bluetooth_low_energy_win to prepare for new Bluetooth test fixture

device/bluetooth/bluetooth_low_energy_win_fake.h

+// Copyright 2016 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 DEVICE_BLUETOOTH_BLUETOOTH_LOW_ENERGY_WIN_FAKE_H_
+
+#include "device/bluetooth/bluetooth_low_energy_win.h"
+
+namespace device {
+namespace win {
+
+// Fake implementation of BluetoothLowEnergyHub. Used for BluetoothTestWin.
+class BluetoothLowEnergyHubFake : public BluetoothLowEnergyHub {
+ public:
+  BluetoothLowEnergyHubFake();
+  ~BluetoothLowEnergyHubFake() override;
+
+  bool EnumerateKnownBluetoothLowEnergyDevices(
+      ScopedVector<BluetoothLowEnergyDeviceInfo>* devices,
+      std::string* error) override;
+  bool EnumerateKnownBluetoothLowEnergyServices(
+      const base::FilePath& device_path,
+      ScopedVector<BluetoothLowEnergyServiceInfo>* services,
+      std::string* error) override;
+};
+
+}  // namespace win
+}  // namespace device
+
+#endif  // DEVICE_BLUETOOTH_BLUETOOTH_LOW_ENERGY_WIN_FAKE_H_