Ensure settings returned from Content Settings providers are valid

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 433bbd7ab0bd9ecc74f8457d61add2ed48e3c2bc..4f72ccf3ceb2fc5d2e3444e8911447ecf03603b0 100644
--- a/chrome/browser/content_settings/content_settings_policy_provider_unittest.cc
+++ b/chrome/browser/content_settings/content_settings_policy_provider_unittest.cc
@@ -281,4 +281,23 @@ TEST_F(PolicyProviderTest, AutoSelectCertificateList) {
   provider.ShutdownOnUIThread();
 }
 
+TEST_F(PolicyProviderTest, InvalidManagedDefaultContentSetting) {
+  TestingProfile profile;
+  sync_preferences::TestingPrefServiceSyncable* prefs =
+      profile.GetTestingPrefService();
+  PolicyProvider provider(prefs);
+
+  prefs->SetManagedPref(
+      prefs::kManagedDefaultCookiesSetting,
+      base::MakeUnique<base::Value>(CONTENT_SETTING_DETECT_IMPORTANT_CONTENT));
+
+  // The setting provided in the cookies pref is not valid for cookies. It
+  // should be ignored.
+  std::unique_ptr<RuleIterator> rule_iterator(provider.GetRuleIterator(
+      CONTENT_SETTINGS_TYPE_COOKIES, std::string(), false));
+  EXPECT_FALSE(rule_iterator);
+
+  provider.ShutdownOnUIThread();
+}
+
 }  // namespace content_settings