Remove use of deprecated MessageLoop methods in chrome/.

chrome/browser/chromeos/login/ui/captive_portal_window_browsertest.cc

 // Copyright 2014 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 <memory>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
+#include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/chromeos/login/login_manager_test.h"
 #include "chrome/browser/chromeos/login/screens/error_screen.h"
 #include "chrome/browser/chromeos/login/screens/network_error_view.h"
 #include "chrome/browser/chromeos/login/startup_utils.h"
 #include "chrome/browser/chromeos/login/test/oobe_screen_waiter.h"
 #include "chrome/browser/chromeos/login/ui/captive_portal_window_proxy.h"
 #include "chrome/browser/chromeos/login/ui/login_display_host.h"
 #include "chrome/browser/chromeos/login/ui/webui_login_view.h"
 #include "chrome/browser/chromeos/net/network_portal_detector_test_impl.h"
 #include "chrome/test/base/in_process_browser_test.h"
@@ skipping 62 matching lines @@
   void SetUpOnMainThread() override {
     host_ = LoginDisplayHost::default_host();
     content::WebContents* web_contents =
         host_->GetWebUILoginView()->GetWebContents();
     captive_portal_window_proxy_.reset(
         new CaptivePortalWindowProxy(&delegate_, web_contents));
   }
 
   void TearDownOnMainThread() override {
     captive_portal_window_proxy_.reset();
-    base::MessageLoopForUI::current()->DeleteSoon(FROM_HERE, host_);
+    base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, host_);
     base::MessageLoopForUI::current()->RunUntilIdle();
   }
 
  private:
   std::unique_ptr<CaptivePortalWindowProxy> captive_portal_window_proxy_;
   CaptivePortalWindowProxyStubDelegate delegate_;
 
   LoginDisplayHost* host_;
 };
 
@@ skipping 120 matching lines @@
 
   ASSERT_EQ(PortalDetectorStrategy::STRATEGY_ID_LOGIN_SCREEN, strategy_id());
   network_portal_detector()->NotifyObserversForTesting();
   OobeScreenWaiter(OobeScreen::SCREEN_ERROR_MESSAGE).Wait();
   ASSERT_EQ(PortalDetectorStrategy::STRATEGY_ID_ERROR_SCREEN, strategy_id());
 
   error_screen->ShowCaptivePortal();
 }
 
 }  // namespace chromeos