Remove EmptyRuleIterators with nullptrs.

chrome/browser/content_settings/content_settings_policy_provider_unittest.cc

Index: chrome/browser/content_settings/content_settings_policy_provider_unittest.cc
diff --git a/chrome/browser/content_settings/content_settings_policy_provider_unittest.cc b/chrome/browser/content_settings/content_settings_policy_provider_unittest.cc
index dfd3cc71c79bd40c23d56499f01c1775dfc1c106..948dd312b77a640ff5d5d6d3fb69b4c55e546ef2 100644
--- a/chrome/browser/content_settings/content_settings_policy_provider_unittest.cc
+++ b/chrome/browser/content_settings/content_settings_policy_provider_unittest.cc
@@ -41,11 +41,9 @@ TEST_F(PolicyProviderTest, DefaultGeolocationContentSetting) {
       profile.GetTestingPrefService();
   PolicyProvider provider(prefs);
 
-  Rules rules;
-
   std::unique_ptr<RuleIterator> rule_iterator(provider.GetRuleIterator(
       CONTENT_SETTINGS_TYPE_GEOLOCATION, std::string(), false));
-  EXPECT_FALSE(rule_iterator->HasNext());
+  EXPECT_FALSE(rule_iterator);
 
   // Change the managed value of the default geolocation setting
   prefs->SetManagedPref(prefs::kManagedDefaultGeolocationSetting,
@@ -53,6 +51,7 @@ TEST_F(PolicyProviderTest, DefaultGeolocationContentSetting) {
 
   rule_iterator = provider.GetRuleIterator(CONTENT_SETTINGS_TYPE_GEOLOCATION,
                                            std::string(), false);
+  ASSERT_TRUE(rule_iterator);
   EXPECT_TRUE(rule_iterator->HasNext());
   Rule rule = rule_iterator->Next();
   EXPECT_FALSE(rule_iterator->HasNext());