GCMBaseIntentService | Skeleton for application-specific IntentService s responsible for
handling communication from Google Cloud Messaging service. |
GCMBroadcastReceiver | BroadcastReceiver that receives GCM messages and delivers them to
an application-specific GCMBaseIntentService subclass. |
GCMConstants | Constants used by the GCM library. |
GCMRegistrar | Utilities for device registration. |