Introduce incognito preference settings.

chrome/browser/policy/managed_prefs_banner_base_unittest.cc

Index: chrome/browser/policy/managed_prefs_banner_base_unittest.cc
diff --git a/chrome/browser/policy/managed_prefs_banner_base_unittest.cc b/chrome/browser/policy/managed_prefs_banner_base_unittest.cc
index 3f2569d1d9a3744b76d21641f56bf1e48ea50ced..4e9c07f25710c5c832ea50227ae5a461eed14315 100644
--- a/chrome/browser/policy/managed_prefs_banner_base_unittest.cc
+++ b/chrome/browser/policy/managed_prefs_banner_base_unittest.cc
@@ -15,10 +15,10 @@ namespace policy {
 class ManagedPrefsBannerBaseTest : public testing::Test {
  public:
   virtual void SetUp() {
-    user_prefs_.reset(new TestingPrefService);
+    user_prefs_.reset(TestingPrefService::CreateTestingPrefService());
     user_prefs_->RegisterBooleanPref(prefs::kHomePageIsNewTabPage, false);
     user_prefs_->RegisterBooleanPref(prefs::kSearchSuggestEnabled, false);
-    local_state_.reset(new TestingPrefService);
+    local_state_.reset(TestingPrefService::CreateTestingPrefService());
     local_state_->RegisterBooleanPref(prefs::kHomePageIsNewTabPage, false);
     local_state_->RegisterBooleanPref(prefs::kMetricsReportingEnabled, false);
   }