Use SignalingAddress in SignalStrategy insterface.

remoting/protocol/protocol_mock_objects.h

Index: remoting/protocol/protocol_mock_objects.h
diff --git a/remoting/protocol/protocol_mock_objects.h b/remoting/protocol/protocol_mock_objects.h
index a39d619b3ff3915e5d3fbf886d6d9e622645985f..391eb4dcc023a22387d6b1b483b5cf1112e954fd 100644
--- a/remoting/protocol/protocol_mock_objects.h
+++ b/remoting/protocol/protocol_mock_objects.h
@@ -30,6 +30,7 @@
 #include "remoting/protocol/session_manager.h"
 #include "remoting/protocol/transport.h"
 #include "remoting/protocol/video_stub.h"
+#include "remoting/signaling/signaling_address.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "third_party/libjingle_xmpp/xmllite/xmlelement.h"
 
@@ -206,15 +207,15 @@ class MockSessionManager : public SessionManager {
   void set_protocol_config(
       std::unique_ptr<CandidateSessionConfig> config) override {}
   MOCK_METHOD2(ConnectPtr,
-               Session*(const std::string& host_jid,
+               Session*(const SignalingAddress& peer_address,
                         Authenticator* authenticator));
   MOCK_METHOD0(Close, void());
   MOCK_METHOD1(set_authenticator_factory_ptr,
                void(AuthenticatorFactory* factory));
   std::unique_ptr<Session> Connect(
-      const std::string& host_jid,
+      const SignalingAddress& peer_address,
       std::unique_ptr<Authenticator> authenticator) override {
-    return base::WrapUnique(ConnectPtr(host_jid, authenticator.get()));
+    return base::WrapUnique(ConnectPtr(peer_address, authenticator.get()));
   }
   void set_authenticator_factory(
       std::unique_ptr<AuthenticatorFactory> authenticator_factory) override {