Adding the last test related with connect/disconnect

device/bluetooth/bluetooth_low_energy_device_mac.mm

Index: device/bluetooth/bluetooth_low_energy_device_mac.mm
diff --git a/device/bluetooth/bluetooth_low_energy_device_mac.mm b/device/bluetooth/bluetooth_low_energy_device_mac.mm
index 1ca4a45f34c3049a0d758e421d9c0488738727ea..f52e64c7dad5f11defb2939ecdbcb98883729bfe 100644
--- a/device/bluetooth/bluetooth_low_energy_device_mac.mm
+++ b/device/bluetooth/bluetooth_low_energy_device_mac.mm
@@ -262,11 +262,13 @@ CBPeripheral* BluetoothLowEnergyDeviceMac::GetPeripheral() {
   return peripheral_;
 }
 
-void BluetoothLowEnergyDeviceMac::DidDisconnectPeripheral() {
+void BluetoothLowEnergyDeviceMac::DidDisconnectPeripheral(
+    BluetoothDevice::ConnectErrorCode error_code) {
   if (create_gatt_connection_error_callbacks_.empty()) {
+    // TODO(http://crbug.com/585897): Need to pass the error.
     DidDisconnectGatt();
   } else {
-    DidFailToConnectGatt(ERROR_FAILED);
+    DidFailToConnectGatt(BluetoothDevice::ERROR_FAILED);
   }
 }