title: Connect to an already running instance of chrome using selenium in python
body: <p>I am facing an issue with chrome while launching it with extensions using selenium. I have logged an issue
  <a href="https://code.google.com/p/chromedriver/issues/detail?id=508" rel="noreferrer">https://code.google.com/p/chromedriver/issues/detail?id=508</a></p>
  
  <p>For a workaround I am planing to launch chrome than enable required extension, after this connect to it using selenium.</p>
  
  <p>But I am unable to so so.
  Can anyone help in this matter as d=webdriver.Chrome() always launches a new chrome instance.
  I want to connect to an already running instance of chrome.</p>