Execute AuthenticateToLogin on UI thread.

chrome/browser/chromeos/login/existing_user_controller.cc

 // Copyright (c) 2010 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 "chrome/browser/chromeos/login/existing_user_controller.h"
 
 #include <algorithm>
 #include <functional>
 
 #include "app/l10n_util.h"
@@ skipping 106 matching lines @@
 void ExistingUserController::Login(UserController* source,
                                    const string16& password) {
   std::vector<UserController*>::const_iterator i =
       std::find(controllers_.begin(), controllers_.end(), source);
   DCHECK(i != controllers_.end());
   selected_view_index_ = i - controllers_.begin();
 
   authenticator_ = LoginUtils::Get()->CreateAuthenticator(this);
   Profile* profile = g_browser_process->profile_manager()->GetDefaultProfile();
   ChromeThread::PostTask(
-      ChromeThread::FILE, FROM_HERE,
+      ChromeThread::UI, FROM_HERE,
       NewRunnableMethod(authenticator_.get(),
                         &Authenticator::AuthenticateToLogin,
                         profile,
                         controllers_[selected_view_index_]->user().email(),
                         UTF16ToUTF8(password)));
 
   // Disable clicking on other windows.
   SendSetLoginState(false);
 }
 
@@ skipping 94 matching lines @@
     // Delay deletion as we're on the stack.
     MessageLoop::current()->DeleteSoon(FROM_HERE, this);
   }
 }
 
 void ExistingUserController::OnOffTheRecordLoginSuccess() {
   LoginUtils::Get()->CompleteOffTheRecordLogin();
 }
 
 }  // namespace chromeos