Do the ReloadLocaleResources() call on the IO thread to avoid synchronization issues.

chrome/browser/ui/webui/bidi_checker_web_ui_test.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_BIDI_CHECKER_WEB_UI_TEST_H_
 #define CHROME_BROWSER_UI_WEBUI_BIDI_CHECKER_WEB_UI_TEST_H_
 #pragma once
 
 #include <string>
 
 #include "chrome/browser/ui/webui/web_ui_browsertest.h"
 #include "chrome/test/base/in_process_browser_test.h"
 
+namespace base {
+class WaitableEvent;
+}
+
 // Base class for BidiChecker-based tests. Preloads the BidiChecker JS library
 // for each test.
 class WebUIBidiCheckerBrowserTest : public WebUIBrowserTest {
  public:
   virtual ~WebUIBidiCheckerBrowserTest();
 
  protected:
   WebUIBidiCheckerBrowserTest();
 
   // Runs the Bidi Checker on the given page URL. |is_rtl| should be true when
@@ skipping 12 matching lines @@
 
 // Base class for BidiChecker-based tests that run with an RTL UI.
 class WebUIBidiCheckerBrowserTestRTL : public WebUIBidiCheckerBrowserTest {
  public:
   void RunBidiCheckerOnPage(const std::string& page_url);
 
  protected:
   virtual void SetUpOnMainThread() OVERRIDE;
   virtual void CleanUpOnMainThread() OVERRIDE;
 
+  static void SetUpOnIOThread(base::WaitableEvent* event);
+
   // The app locale before we change it
   std::string app_locale_;
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_BIDI_CHECKER_WEB_UI_TEST_H_