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

chrome/test/base/ui_test_utils.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_TEST_BASE_UI_TEST_UTILS_H_
 #define CHROME_TEST_BASE_UI_TEST_UTILS_H_
 #pragma once
 
 #include <map>
 #include <queue>
@@ skipping 37 matching lines @@
 class GURL;
 class HistoryService;
 class MessageLoop;
 class Profile;
 class ScopedTempDir;
 class SkBitmap;
 class TabContents;
 typedef TabContents TabContentsWrapper;
 class TemplateURLService;
 
+namespace base {
+class WaitableEvent;
+}
+
 namespace browser {
 struct NavigateParams;
 }
 
 namespace content {
 class RenderViewHost;
 class RenderWidgetHost;
 class WebContents;
 }
 
@@ skipping 52 matching lines @@
 
 // Waits for a load stop for the specified |tab|'s controller, if the tab is
 // currently loading.  Otherwise returns immediately.
 void WaitForLoadStop(content::WebContents* tab);
 
 // Waits for a new browser to be created, returning the browser.
 // TODO(dubroy): Remove this race hazard (http://crbug.com/119521).
 // Use BrowserAddedObserver instead.
 Browser* WaitForNewBrowser();
 
+// Waits for |event| to be signaled running message loop in the current thread
+// while waiting.
+void WaitEventSignaled(base::WaitableEvent* event);
+
 // Opens |url| in an incognito browser window with the incognito profile of
 // |profile|, blocking until the navigation finishes. This will create a new
 // browser if a browser with the incognito profile does not exist.
 void OpenURLOffTheRecord(Profile* profile, const GURL& url);
 
 // Performs the provided navigation process, blocking until the navigation
 // finishes. May change the params in some cases (i.e. if the navigation
 // opens a new browser window). Uses browser::Navigate.
 void NavigateToURL(browser::NavigateParams* params);
 
@@ skipping 554 matching lines @@
 // ui_controls_linux.cc and ui_controls_mac.cc
 void ClickTask(ui_controls::MouseButton button,
                int state,
                const base::Closure& followup);
 
 }  // namespace internal
 
 }  // namespace ui_test_utils
 
 #endif  // CHROME_TEST_BASE_UI_TEST_UTILS_H_