bluetooth: Add FakeBluetooth interface

device/bluetooth/test/fake_bluetooth.h

Index: device/bluetooth/test/fake_bluetooth.h
diff --git a/device/bluetooth/test/fake_bluetooth.h b/device/bluetooth/test/fake_bluetooth.h
new file mode 100644
index 0000000000000000000000000000000000000000..654d6097c7de7176f2d4ecabac4004b7b908006d
--- /dev/null
+++ b/device/bluetooth/test/fake_bluetooth.h
@@ -0,0 +1,29 @@
+// Copyright 2017 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_FAKE_BLUETOOTH_H_
+#define DEVICE_BLUETOOTH_TEST_FAKE_BLUETOOTH_H_
+
+#include "base/compiler_specific.h"
+#include "device/bluetooth/public/interfaces/test/fake_bluetooth.mojom.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace bluetooth {
+
+// Implementation of FakeBluetooth in
+// src/device/bluetooth/public/interfaces/test/fake_bluetooth.mojom.
+// Implemented on top of the C++ device/bluetooth API.
+class FakeBluetooth : NON_EXPORTED_BASE(public mojom::FakeBluetooth) {
+ public:
+  FakeBluetooth();
+  ~FakeBluetooth() override;
+
+  static void Create(mojom::FakeBluetoothRequest request);
+
+  void SetLEAvailability(bool available,
+                         const SetLEAvailabilityCallback& callback) override;
+};
+
+}  // namespace bluetooth
+
+#endif  // DEVICE_BLUETOOTH_TEST_FAKE_BLUETOOTH_H_