[Sync] Propagate XMPP auth errors to SyncNotifierObservers

jingle/notifier/communicator/single_login_attempt.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <string>
 
 #include "jingle/notifier/communicator/single_login_attempt.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
@@ skipping 113 matching lines @@
               ServerInformation(
                   redirect_server,
                   current_settings_->ssltcp_support));
           // May be deleted at this point.
           return;
         }
       }
     }
   }
 
+  if (error == buzz::XmppEngine::ERROR_UNAUTHORIZED) {
+    delegate_->OnRejectedCredentials();
+    return;
+  }
+
   if (current_settings_ == settings_list_.end()) {
     NOTREACHED();
     return;
   }
 
   ++current_settings_;
   if (current_settings_ == settings_list_.end()) {
     VLOG(1) << "Could not connect to any XMPP server";
     delegate_->OnNeedReconnect();
     return;
@@ skipping 18 matching lines @@
           client_settings.token_service(),
           login_settings_.auth_mechanism());
   xmpp_connection_.reset(
       new XmppConnection(client_settings,
                          login_settings_.request_context_getter(),
                          this,
                          pre_xmpp_auth));
 }
 
 }  // namespace notifier