Notify calling web-app when Host plugin becomes connected to a client.

remoting/host/heartbeat_sender.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_HOST_HEARTBEAT_SENDER_H_
 #define REMOTING_HOST_HEARTBEAT_SENDER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 52 matching lines @@
   virtual ~HeartbeatSender();
 
   // Initializes heart-beating for |jingle_client_| with |config_|. Returns
   // false if the config is invalid (e.g. private key cannot be parsed).
   bool Init();
 
   // HostStatusObserver implementation.
   virtual void OnSignallingConnected(SignalStrategy* signal_strategy,
                                      const std::string& full_jid) OVERRIDE;
   virtual void OnSignallingDisconnected() OVERRIDE;
+  virtual void OnAuthenticatedClientsChanged(int clients) OVERRIDE;
   virtual void OnShutdown() OVERRIDE;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(HeartbeatSenderTest, DoSendStanza);
   FRIEND_TEST_ALL_PREFIXES(HeartbeatSenderTest, CreateHeartbeatMessage);
   FRIEND_TEST_ALL_PREFIXES(HeartbeatSenderTest, ProcessResponse);
 
   enum State {
     CREATED,
     INITIALIZED,
@@ skipping 19 matching lines @@
   scoped_ptr<IqRequest> request_;
   int interval_ms_;
   base::RepeatingTimer<HeartbeatSender> timer_;
 
   DISALLOW_COPY_AND_ASSIGN(HeartbeatSender);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_HEARTBEAT_SENDER_H_