Template methods on Timer classes instead of the classes themselves.

remoting/host/heartbeat_sender.h

Index: remoting/host/heartbeat_sender.h
diff --git a/remoting/host/heartbeat_sender.h b/remoting/host/heartbeat_sender.h
index 162a14733a5f2b767c01e9ce7c612be178960791..1541edd51e365b0171859346941f89d41d43724e 100644
--- a/remoting/host/heartbeat_sender.h
+++ b/remoting/host/heartbeat_sender.h
@@ -158,8 +158,8 @@ class HeartbeatSender : public SignalStrategy::Listener {
   scoped_ptr<IqSender> iq_sender_;
   scoped_ptr<IqRequest> request_;
   int interval_ms_;
-  base::RepeatingTimer<HeartbeatSender> timer_;
-  base::OneShotTimer<HeartbeatSender> timer_resend_;
+  base::RepeatingTimer timer_;
+  base::OneShotTimer timer_resend_;
   int sequence_id_;
   bool sequence_id_was_set_;
   int sequence_id_recent_set_num_;
@@ -169,7 +169,7 @@ class HeartbeatSender : public SignalStrategy::Listener {
   // Fields to send and indicate completion of sending host-offline-reason.
   std::string host_offline_reason_;
   base::Callback<void(bool success)> host_offline_reason_ack_callback_;
-  base::OneShotTimer<HeartbeatSender> host_offline_reason_timeout_timer_;
+  base::OneShotTimer host_offline_reason_timeout_timer_;
 
   base::ThreadChecker thread_checker_;