bluetooth: Add FakeBluetooth interface

device/bluetooth/public/interfaces/test/fake_bluetooth.mojom

Index: device/bluetooth/public/interfaces/test/fake_bluetooth.mojom
diff --git a/device/bluetooth/public/interfaces/test/fake_bluetooth.mojom b/device/bluetooth/public/interfaces/test/fake_bluetooth.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..cb7078bf468ec87e71338259330e0fc36e18e51c
--- /dev/null
+++ b/device/bluetooth/public/interfaces/test/fake_bluetooth.mojom
@@ -0,0 +1,12 @@
+// 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.
+
+module bluetooth.mojom;
+
+// FakeBluetooth allows its clients to fake the global Bluetooth state.
+interface FakeBluetooth {
+  // Set to false to simulate that the platform doesn't support Bluetooth Low
+  // Energy.
+  SetLEAvailability(bool available) => ();
+};