bluetooth: Introduce SetLowEnergyAvailableForTesting

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
index bdfe7907d7cbb376cbc4a00de683ec075d8190db..74b7a5cc6ebe43bc5d1836006082dd47ae4816a1 100644
--- a/device/bluetooth/test/fake_bluetooth.cc
+++ b/device/bluetooth/test/fake_bluetooth.cc
@@ -7,6 +7,7 @@
 #include <utility>
 
 #include "base/memory/ptr_util.h"
+#include "device/bluetooth/bluetooth_adapter_factory.h"
 #include "device/bluetooth/public/interfaces/test/fake_bluetooth.mojom.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
@@ -24,7 +25,8 @@ void FakeBluetooth::Create(mojom::FakeBluetoothRequest request) {
 void FakeBluetooth::SetLEAvailability(
     bool available,
     const SetLEAvailabilityCallback& callback) {
-  // TODO(crbug.com/569709): Actually implement this method.
+  device::BluetoothAdapterFactory::Get().SetLowEnergyAvailableForTesting(
+      available);
   callback.Run();
 }