Revert of Move NegotiatingClientAuthentication creation to ChromotingClient.

remoting/client/chromoting_client.cc

Index: remoting/client/chromoting_client.cc
diff --git a/remoting/client/chromoting_client.cc b/remoting/client/chromoting_client.cc
index 71d020f0a1123993a35addd356fe3afe5f697c52..9239a35dcad2c81ee5d53530e04ea524ce274fd5 100644
--- a/remoting/client/chromoting_client.cc
+++ b/remoting/client/chromoting_client.cc
@@ -53,7 +53,7 @@
 
 void ChromotingClient::Start(
     SignalStrategy* signal_strategy,
-    const protocol::ClientAuthenticationConfig& client_auth_config,
+    scoped_ptr<protocol::Authenticator> authenticator,
     scoped_refptr<protocol::TransportContext> transport_context,
     const std::string& host_jid,
     const std::string& capabilities) {
@@ -89,7 +89,7 @@
   session_manager_.reset(new protocol::JingleSessionManager(signal_strategy));
   session_manager_->set_protocol_config(std::move(protocol_config_));
 
-  client_auth_config_ = client_auth_config;
+  authenticator_ = std::move(authenticator);
   transport_context_ = transport_context;
 
   signal_strategy_ = signal_strategy;
@@ -212,10 +212,7 @@
 void ChromotingClient::StartConnection() {
   DCHECK(thread_checker_.CalledOnValidThread());
   connection_->Connect(
-      session_manager_->Connect(
-          host_jid_,
-          make_scoped_ptr(new protocol::NegotiatingClientAuthenticator(
-              client_auth_config_))),
+      session_manager_->Connect(host_jid_, std::move(authenticator_)),
       transport_context_, this);
 }