@protocol GADNativeAdDelegate <NSObject>
Identifies native ad assets.
Called before presenting the user a full screen view in response to an ad action. Use this opportunity to stop animations, time sensitive interactions, etc.
Normally the user looks at the ad, dismisses it, and control returns to your application with the nativeAdDidDismissScreen: message. However, if the user hits the Home button or clicks on an App Store link, your application will be backgrounded. The next method called will be the applicationWillResignActive: of your UIApplicationDelegate object.
Called after dismissing a full screen view. Use this opportunity to restart anything you may have stopped as part of nativeAdWillPresentScreen:.