Remove use of deprecated MessageLoop methods in chrome/.

chrome/browser/chromeos/login/login_ui_keyboard_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 "base/command_line.h"
+#include "base/location.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/input_method/input_method_persistence.h"
 #include "chrome/browser/chromeos/language_preferences.h"
 #include "chrome/browser/chromeos/login/login_manager_test.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/login_display_host.h"
 #include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
 #include "chrome/common/pref_names.h"
 #include "chromeos/chromeos_switches.h"
@@ skipping 30 matching lines @@
   }
   ~FocusPODWaiter() {
     GetOobeUI()
         ->signin_screen_handler_for_test()
         ->SetFocusPODCallbackForTesting(base::Closure());
   }
 
   void OnFocusPOD() {
     focused_ = true;
     if (runner_.get())
-      base::MessageLoopForUI::current()->PostTask(
+      base::ThreadTaskRunnerHandle::Get()->PostTask(
           FROM_HERE,
           base::Bind(&FocusPODWaiter::ExitMessageLoop, base::Unretained(this)));
   }
 
   void ExitMessageLoop() { runner_->Quit(); }
 
   void Wait() {
     if (focused_)
       return;
     runner_->Run();
@@ skipping 204 matching lines @@
   // Switch back.
   js_checker().Evaluate("$('gaia-signin').cancel()");
   OobeScreenWaiter(OobeScreen::SCREEN_ACCOUNT_PICKER).Wait();
 
   EXPECT_EQ(expected_input_methods,
             input_method::InputMethodManager::Get()
                 ->GetActiveIMEState()
                 ->GetActiveInputMethodIds());
 }
 }  // namespace chromeos