Third patch in getting rid of caching MessageLoop pointers and always using C...

chrome/browser/dom_ui/new_tab_ui_uitest.cc

 // Copyright (c) 2009 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/test/ui/ui_test.h"
 
 #include "base/file_path.h"
 #include "chrome/app/chrome_dll_resource.h"
 #include "chrome/browser/dom_ui/new_tab_ui.h"
 #include "chrome/common/pref_names.h"
@@ skipping 42 matching lines @@
         &filler_thumbnails_count));
     if (filler_thumbnails_count == 0)
       break;
     PlatformThread::Sleep(kWaitDuration);
     wait_time -= kWaitDuration;
   }
   EXPECT_EQ(0, filler_thumbnails_count);
 }
 
 TEST_F(NewTabUITest, UpdateUserPrefsVersion) {
-  PrefService prefs(FilePath(), NULL);
+  PrefService prefs((FilePath()));
 
   // Does the migration
   NewTabUI::RegisterUserPrefs(&prefs);
 
   ASSERT_EQ(NewTabUI::current_pref_version(),
             prefs.GetInteger(prefs::kNTPPrefVersion));
 
   // Reset the version
   prefs.ClearPref(prefs::kNTPPrefVersion);
   ASSERT_EQ(0, prefs.GetInteger(prefs::kNTPPrefVersion));
 
   bool migrated = NewTabUI::UpdateUserPrefsVersion(&prefs);
   ASSERT_TRUE(migrated);
   ASSERT_EQ(NewTabUI::current_pref_version(),
             prefs.GetInteger(prefs::kNTPPrefVersion));
 
   migrated = NewTabUI::UpdateUserPrefsVersion(&prefs);
   ASSERT_FALSE(migrated);
 }