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

chrome/browser/ui/webui/bidi_checker_web_ui_test.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/ui/webui/bidi_checker_web_ui_test.h"
 
 #include "base/base_paths.h"
 #include "base/i18n/rtl.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
@@ skipping 52 matching lines @@
 }
 
 // Since synchronization isn't complete for the ResourceBundle class, reload
 // locale resources on the IO thread.
 // crbug.com/95425, crbug.com/132752
 void ReloadLocaleResources(const std::string& new_locale) {
   content::BrowserThread::PostTaskAndReply(
       content::BrowserThread::IO, FROM_HERE,
       base::Bind(&ReloadLocaleResourcesOnIOThread, base::ConstRef(new_locale)),
       MessageLoop::QuitClosure());
-  ui_test_utils::RunMessageLoop();
+  content::RunMessageLoop();
 }
 
 }  // namespace
 
 static const FilePath::CharType* kBidiCheckerTestsJS =
     FILE_PATH_LITERAL("bidichecker_tests.js");
 
 WebUIBidiCheckerBrowserTest::~WebUIBidiCheckerBrowserTest() {}
 
 WebUIBidiCheckerBrowserTest::WebUIBidiCheckerBrowserTest() {}
@@ skipping 667 matching lines @@
 // chrome://history-frame
 //==============================
 
 IN_PROC_BROWSER_TEST_F(WebUIBidiCheckerBrowserTestLTR, TestHistoryFrame) {
   RunBidiCheckerOnPage(chrome::kChromeUIHistoryFrameURL);
 }
 
 IN_PROC_BROWSER_TEST_F(WebUIBidiCheckerBrowserTestRTL, TestHistoryFrame) {
   RunBidiCheckerOnPage(chrome::kChromeUIHistoryFrameURL);
 }