Revert 139424 - Remove V1 authenticators.

remoting/protocol/it2me_host_authenticator_factory.cc

Index: remoting/protocol/it2me_host_authenticator_factory.cc
===================================================================
--- remoting/protocol/it2me_host_authenticator_factory.cc	(revision 139575)
+++ remoting/protocol/it2me_host_authenticator_factory.cc	(working copy)
@@ -6,6 +6,7 @@
 
 #include "base/logging.h"
 #include "crypto/rsa_private_key.h"
+#include "remoting/protocol/v1_authenticator.h"
 #include "remoting/protocol/negotiating_authenticator.h"
 
 namespace remoting {
@@ -27,9 +28,14 @@
     const std::string& local_jid,
     const std::string& remote_jid,
     const buzz::XmlElement* first_message) {
-  return NegotiatingAuthenticator::CreateForHost(
-      local_cert_, *local_private_key_, shared_secret_,
-      AuthenticationMethod::NONE);
+  if (NegotiatingAuthenticator::IsNegotiableMessage(first_message)) {
+    return NegotiatingAuthenticator::CreateForHost(
+        local_cert_, *local_private_key_, shared_secret_,
+        AuthenticationMethod::NONE);
+  }
+
+  return scoped_ptr<Authenticator>(new V1HostAuthenticator(
+      local_cert_, *local_private_key_, shared_secret_, remote_jid));
 }
 
 }  // namespace protocol