title: Where can I find the default back button chevron image for iOS 7?
body: <p>I'm working on updating an old app that uses UIButtons that are meant to mimic a navigation bar's back button in appearance. I'd like to use the default chevron image that's used for back buttons in  iOS 7.</p>
  
  <p>Is this image available somewhere in the iOS 7 SDK or elsewhere so I can use it as a UIButton's image via <code>setImage:forState:</code>?</p>