title: Cannot find protocol declaration for 'ABPeoplePickerNavigationControllerDelegate'
body: <p>In a Project having already ObjC, I'm adding a Swift Class</p>
  
  <pre><code>import AddressBookUI
  class MyVC : UITableViewController, ABPeoplePickerNavigationControllerDelegate {
  }
  </code></pre>
  
  <p>MyApp-Swift.h:289:42: Cannot find protocol declaration for 'ABPeoplePickerNavigationControllerDelegate'; did you mean 'UINavigationControllerDelegate'?</p>
  
  <p>No, Swift, I really mean <code>ABPeoplePickerNavigationControllerDelegate</code>. Really wondering what I am doing wrong here...</p>