Revert 139424 - Remove V1 authenticators.

remoting/protocol/me2me_host_authenticator_factory.cc

Index: remoting/protocol/me2me_host_authenticator_factory.cc
===================================================================
--- remoting/protocol/me2me_host_authenticator_factory.cc	(revision 139575)
+++ remoting/protocol/me2me_host_authenticator_factory.cc	(working copy)
@@ -9,6 +9,7 @@
 #include "crypto/rsa_private_key.h"
 #include "remoting/protocol/channel_authenticator.h"
 #include "remoting/protocol/negotiating_authenticator.h"
+#include "remoting/protocol/v1_authenticator.h"
 #include "third_party/libjingle/source/talk/xmllite/xmlelement.h"
 
 namespace remoting {
@@ -89,6 +90,16 @@
     return scoped_ptr<Authenticator>(new RejectingAuthenticator());
   }
 
+  if (shared_secret_hash_.hash_function == AuthenticationMethod::NONE &&
+      shared_secret_hash_.value.empty()) {
+    // PIN isn't set. Enable V1 authentication.
+    if (!NegotiatingAuthenticator::IsNegotiableMessage(first_message)) {
+      return scoped_ptr<Authenticator>(
+          new V1HostAuthenticator(local_cert_, *local_private_key_,
+                                  "", remote_jid));
+    }
+  }
+
   return NegotiatingAuthenticator::CreateForHost(
       local_cert_, *local_private_key_, shared_secret_hash_.value,
       shared_secret_hash_.hash_function);