Use content::RunBlockingPoolTask() in tests.

chrome/browser/ui/toolbar/recent_tabs_sub_menu_model_unittest.cc

Index: chrome/browser/ui/toolbar/recent_tabs_sub_menu_model_unittest.cc
diff --git a/chrome/browser/ui/toolbar/recent_tabs_sub_menu_model_unittest.cc b/chrome/browser/ui/toolbar/recent_tabs_sub_menu_model_unittest.cc
index cd8a320fc168c7c33bfdf6d11963847ce49e25e1..87abc1547edcf4d346142483c67eeba0328eacf6 100644
--- a/chrome/browser/ui/toolbar/recent_tabs_sub_menu_model_unittest.cc
+++ b/chrome/browser/ui/toolbar/recent_tabs_sub_menu_model_unittest.cc
@@ -4,13 +4,16 @@
 
 #include "chrome/browser/ui/toolbar/recent_tabs_sub_menu_model.h"
 
+#include <string>
+#include <vector>
+
 #include "base/command_line.h"
 #include "base/run_loop.h"
 #include "chrome/app/chrome_command_ids.h"
+#include "chrome/browser/sessions/persistent_tab_restore_service.h"
 #include "chrome/browser/sessions/session_service.h"
 #include "chrome/browser/sessions/session_service_factory.h"
 #include "chrome/browser/sessions/session_types.h"
-#include "chrome/browser/sessions/persistent_tab_restore_service.h"
 #include "chrome/browser/sessions/tab_restore_service_factory.h"
 #include "chrome/browser/sync/glue/local_device_info_provider_mock.h"
 #include "chrome/browser/sync/glue/synced_session.h"
@@ -26,6 +29,8 @@
 #include "chrome/test/base/testing_profile.h"
 #include "components/sessions/serialized_navigation_entry_test_helper.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/test/test_utils.h"
+#include "grit/generated_resources.h"
 #include "sync/api/fake_sync_change_processor.h"
 #include "sync/api/sync_error_factory_mock.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ -135,9 +140,7 @@ class RecentTabsSubMenuModelTest
   }
 
   void WaitForLoadFromLastSession() {
-    content::BrowserThread::GetBlockingPool()->FlushForTesting();
-    base::RunLoop().RunUntilIdle();
-    content::BrowserThread::GetBlockingPool()->FlushForTesting();
+    content::RunAllBlockingPoolTasksUntilIdle();
   }
 
   static KeyedService* GetTabRestoreService(
@@ -282,7 +285,7 @@ TEST_F(RecentTabsSubMenuModelTest,
   TabRestoreServiceFactory::GetInstance()->SetTestingFactory(
       profile(), RecentTabsSubMenuModelTest::GetTabRestoreService);
   // Let the shutdown of previous TabRestoreService run.
-  content::BrowserThread::GetBlockingPool()->FlushForTesting();
+  content::RunAllBlockingPoolTasksUntilIdle();
 
   TestRecentTabsSubMenuModel model(NULL, browser(), NULL);
   TestRecentTabsMenuModelDelegate delegate(&model);