Use SignalingAddress in SignalStrategy insterface.

remoting/host/heartbeat_sender.cc

Index: remoting/host/heartbeat_sender.cc
diff --git a/remoting/host/heartbeat_sender.cc b/remoting/host/heartbeat_sender.cc
index e452b5e45f64d2d9d918359ec78f808c854e1282..8df8890f588c1f3cc06b9dcc40c64ffd900c6bbc 100644
--- a/remoting/host/heartbeat_sender.cc
+++ b/remoting/host/heartbeat_sender.cc
@@ -19,9 +19,9 @@
 #include "remoting/host/host_details.h"
 #include "remoting/host/server_log_entry_host.h"
 #include "remoting/signaling/iq_sender.h"
-#include "remoting/signaling/jid_util.h"
 #include "remoting/signaling/server_log_entry.h"
 #include "remoting/signaling/signal_strategy.h"
+#include "remoting/signaling/signaling_address.h"
 #include "third_party/libjingle_xmpp/xmllite/xmlelement.h"
 #include "third_party/libjingle_xmpp/xmpp/constants.h"
 
@@ -349,7 +349,7 @@ std::unique_ptr<XmlElement> HeartbeatSender::CreateSignature() {
   std::unique_ptr<XmlElement> signature_tag(
       new XmlElement(QName(kChromotingXmlNamespace, kHeartbeatSignatureTag)));
 
-  std::string message = NormalizeJid(signal_strategy_->GetLocalJid()) + ' ' +
+  std::string message = signal_strategy_->GetLocalAddress().jid() + ' ' +
                         base::IntToString(sequence_id_);
   std::string signature(host_key_pair_->SignMessage(message));
   signature_tag->AddText(signature);