Adding XMPP ping functionality to CLoudPrint. XMPP ping and timeout is controlled thorugh Service S…

jingle/notifier/listener/push_notifications_listen_task.h

Index: jingle/notifier/listener/push_notifications_listen_task.h
diff --git a/jingle/notifier/listener/push_notifications_listen_task.h b/jingle/notifier/listener/push_notifications_listen_task.h
index daf48d9b38a21085dd0ef2a9d268e209faf23f05..3120a88eb9933d854b072eda96d4e1439c5089df 100644
--- a/jingle/notifier/listener/push_notifications_listen_task.h
+++ b/jingle/notifier/listener/push_notifications_listen_task.h
@@ -29,6 +29,7 @@ class PushNotificationsListenTask : public buzz::XmppTask {
   class Delegate {
    public:
     virtual void OnNotificationReceived(const Notification& notification) = 0;
+    virtual void OnPingResponseReceived() = 0;
 
    protected:
     virtual ~Delegate() {}
@@ -45,6 +46,8 @@ class PushNotificationsListenTask : public buzz::XmppTask {
 
  private:
   bool IsValidNotification(const buzz::XmlElement* stanza);
+  void ProcessMessageStanza(const buzz::XmlElement* stanza);
+  void ProcessPingStanza(const buzz::XmlElement* stanza);
 
   Delegate* delegate_;