Class android.app.appsearch.GlobalSearchSession

Removed Methods
void addObserver(String, ObserverSpec, Executor, AppSearchObserverCallback)  
void removeObserver(String, AppSearchObserverCallback)  
 

Added Methods
void registerObserverCallback(String, ObserverSpec, Executor, ObserverCallback)  
void unregisterObserverCallback(String, ObserverCallback)