Adding the last test related with connect/disconnect

device/bluetooth/test/bluetooth_test_mac.mm

Index: device/bluetooth/test/bluetooth_test_mac.mm
diff --git a/device/bluetooth/test/bluetooth_test_mac.mm b/device/bluetooth/test/bluetooth_test_mac.mm
index 230a48f3bd09efffd12d0786e5066a3678194f31..24dbe1c62304f1d37878bd8f4a7135910ead93cc 100644
--- a/device/bluetooth/test/bluetooth_test_mac.mm
+++ b/device/bluetooth/test/bluetooth_test_mac.mm
@@ -225,11 +225,8 @@ void BluetoothTestMac::SimulateGattConnectionError(
   [mockPeripheral setStateForTesting:CBPeripheralStateDisconnected];
   CBCentralManager* centralManager =
       static_cast<CBCentralManager*>(mock_central_manager_);
-  // TODO(http://crbug.com/585894): Need to convert the connect error code into
-  // NSError
-  NSError* error = [NSError errorWithDomain:@"BluetoothDevice::ConnectErrorCode"
-                                       code:-1
-                                   userInfo:nil];
+  NSError* error =
+      BluetoothAdapterMac::GetNSErrorFromConnectErrorCode(errorCode);
   [centralManager.delegate centralManager:centralManager
                didFailToConnectPeripheral:peripheral
                                     error:error];