Add BluetoothGattCharacteristicTest::StartNotifySession_Reentrant unit test

device/bluetooth/test/bluetooth_test_win.cc

Index: device/bluetooth/test/bluetooth_test_win.cc
diff --git a/device/bluetooth/test/bluetooth_test_win.cc b/device/bluetooth/test/bluetooth_test_win.cc
index 23ea410f261a37e1b2b1824c01b37ab0c9dce5a8..843e7a43435816cf5054f9b47ee737cd0043ff7b 100644
--- a/device/bluetooth/test/bluetooth_test_win.cc
+++ b/device/bluetooth/test/bluetooth_test_win.cc
@@ -381,6 +381,16 @@ void BluetoothTestWin::SimulateGattNotifySessionStarted(
   FinishPendingTasks();
 }
 
+void BluetoothTestWin::
+    SimulateGattCharacteristicSetNotifyWillFailAsynchronouslyOnce(
+        BluetoothRemoteGattCharacteristic* characteristic) {
+  win::GattCharacteristic* simulated_characteristic =
+      GetSimulatedCharacteristic(characteristic);
+  CHECK(simulated_characteristic);
+  fake_bt_le_wrapper_->SimulateGattCharacteristicSetNotifyError(
+      simulated_characteristic, E_BLUETOOTH_ATT_UNKNOWN_ERROR);
+}
+
 void BluetoothTestWin::SimulateGattCharacteristicChanged(
     BluetoothRemoteGattCharacteristic* characteristic,
     const std::vector<uint8_t>& value) {