title: Android: Do I need to respect isLimitAdTrackingEnabled()?
body: <p>I have an app that I'm working on that will do some very basic user tracking for advertising purposes. While looking around about the new ID for advertising I found an interesting method:
  <a href="http://developer.android.com/reference/com/google/android/gms/ads/identifier/AdvertisingIdClient.Info.html#isLimitAdTrackingEnabled()">http://developer.android.com/reference/com/google/android/gms/ads/identifier/AdvertisingIdClient.Info.html#isLimitAdTrackingEnabled()</a></p>
  
  <p>The docs for this method are incredibly sparse. How do users enable the limited ad tracking? I can't find anything on my Nexus 4.4 that look like it would set limiting ad tracking. </p>
  
  <p>So my real question is, do I need to respect this boolean, and not track the user if they have this set? I assume so, but I'd really like to know more about it, and the docs aren't helping.</p>