Move ui_test_utils::RunMessageLoop to test_utils so that it can be reused by content_browsertests.

chrome/browser/printing/print_dialog_cloud_interative_uitest.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 "chrome/browser/printing/print_dialog_cloud.h"
 #include "chrome/browser/printing/print_dialog_cloud_internal.h"
 
 #include <functional>
 
 #include "base/bind.h"
@@ skipping 226 matching lines @@
 #if defined(OS_WIN)
 #define MAYBE_HandlersRegistered FLAKY_HandlersRegistered
 #else
 #define MAYBE_HandlersRegistered HandlersRegistered
 #endif
 IN_PROC_BROWSER_TEST_F(PrintDialogCloudTest, MAYBE_HandlersRegistered) {
   AddTestHandlers();
 
   TestController::GetInstance()->set_use_delegate(true);
 
-  ui_test_utils::RunMessageLoop();
+  content::RunMessageLoop();
 
   ASSERT_TRUE(TestController::GetInstance()->result());
 
   // Close the dialog before finishing the test.
   content::WindowedNotificationObserver tab_closed_observer(
       content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
       content::NotificationService::AllSources());
 
   // Can't use ui_test_utils::SendKeyPressSync or
   // ui_test_utils::SendKeyPressAndWait due to a race condition with closing
   // the window. See http://crbug.com/111269
   BrowserWindow* window = browser()->window();
   ASSERT_TRUE(window);
   gfx::NativeWindow native_window = window->GetNativeWindow();
   ASSERT_TRUE(native_window);
   bool key_sent = ui_controls::SendKeyPress(native_window, ui::VKEY_ESCAPE,
                                             false, false, false, false);
   EXPECT_TRUE(key_sent);
   if (key_sent)
     tab_closed_observer.Wait();
 }