Class android.media.session.MediaSessionManager

Added Methods
void addOnActiveSessionsForPackageChangedListener(String, Executor, ComponentName, OnActiveSessionsChangedListener)  
void addOnActiveSessionsForPackageChangedListener(String, Executor, OnActiveSessionsChangedListener)  
List<Token> getActiveSessionsForPackage(String)  
List<Token> getActiveSessionsForPackage(String, ComponentName)  
void removeOnActiveSessionsForPackageChangedListener(OnActiveSessionsChangedListener)