Implement BluetoothTestBlueZ and enable some LE tests.

device/bluetooth/test/bluetooth_test_bluez.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 DEVICE_BLUETOOTH_TEST_BLUETOOTH_TEST_BLUEZ_H_
+#define DEVICE_BLUETOOTH_TEST_BLUETOOTH_TEST_BLUEZ_H_
+
+#include "device/bluetooth/test/bluetooth_test.h"
+
+namespace bluez {
+class FakeBluetoothDeviceClient;
+}
+
+namespace device {
+
+// BlueZ implementation of BluetoothTestBase.
+class BluetoothTestBlueZ : public BluetoothTestBase {
+ public:
+  BluetoothTestBlueZ();
+  ~BluetoothTestBlueZ() override;
+
+  // Test overrides:
+  void SetUp() override;
+  void TearDown() override;
+
+  // BluetoothTestBase overrides:
+  bool PlatformSupportsLowEnergy() override;
+  void InitWithFakeAdapter() override;
+  BluetoothDevice* DiscoverLowEnergyDevice(int device_ordinal) override;
+
+ private:
+  bluez::FakeBluetoothDeviceClient* fake_bluetooth_device_client_;
+};
+
+// Defines common test fixture name. Use TEST_F(BluetoothTest, YourTestName).
+using BluetoothTest = BluetoothTestBlueZ;
+
+}  // namespace device
+
+#endif  // DEVICE_BLUETOOTH_TEST_BLUETOOTH_TEST_BLUEZ_H_