I disable Chrome Pop Up Blocking

[Ale]

Hi,

I need to disable Chrome Pop Up Blocking (--disable-popup-blocking ???), I am using Behat Mink and selenium2. Here is how my behat.yml looks like which is not working:

  extensions:

    Behat\MinkExtension:

      javascript_session: selenium2

      base_url: https://int.intx.benefitdigital.com/us/en

      selenium2:

        wd_host: 

        browser: chrome

        capabilities: {'platform':'OS X 10.11', 'browser':'chrome', 'version':'63','extra_capabilities':{'extendedDebugging' : 'true', 'switches':'--disable-popup-blocking'}} 

    SensioLabs\Behat\PageObjectExtension: ~

Any ideas? Thanks!