bluetooth: Add FakeBluetooth interface

device/bluetooth/test/fake_bluetooth.cc

Index: device/bluetooth/test/fake_bluetooth.cc
diff --git a/device/bluetooth/test/fake_bluetooth.cc b/device/bluetooth/test/fake_bluetooth.cc
new file mode 100644
index 0000000000000000000000000000000000000000..bdfe7907d7cbb376cbc4a00de683ec075d8190db
--- /dev/null
+++ b/device/bluetooth/test/fake_bluetooth.cc
@@ -0,0 +1,31 @@
+// 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.
+
+#include "device/bluetooth/test/fake_bluetooth.h"
+
+#include <utility>
+
+#include "base/memory/ptr_util.h"
+#include "device/bluetooth/public/interfaces/test/fake_bluetooth.mojom.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+
+namespace bluetooth {
+
+FakeBluetooth::FakeBluetooth() {}
+FakeBluetooth::~FakeBluetooth() {}
+
+// static
+void FakeBluetooth::Create(mojom::FakeBluetoothRequest request) {
+  mojo::MakeStrongBinding(base::MakeUnique<FakeBluetooth>(),
+                          std::move(request));
+}
+
+void FakeBluetooth::SetLEAvailability(
+    bool available,
+    const SetLEAvailabilityCallback& callback) {
+  // TODO(crbug.com/569709): Actually implement this method.
+  callback.Run();
+}
+
+}  // namespace bluetooth