Make policy errors available to display in about:policy.

chrome/browser/policy/config_dir_policy_provider_unittest.cc

 // Copyright (c) 2011 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 <algorithm>
 
 #include "base/file_util.h"
 #include "base/json/json_value_serializer.h"
 #include "base/path_service.h"
 #include "base/scoped_temp_dir.h"
@@ skipping 174 matching lines @@
   BrowserThread file_thread_;
 };
 
 TEST_P(ConfigDirPolicyProviderValueTest, Default) {
   ConfigDirPolicyProvider provider(GetChromePolicyDefinitionList(), test_dir());
   PolicyMap policy_map;
   EXPECT_TRUE(provider.Provide(&policy_map));
   EXPECT_TRUE(policy_map.empty());
 }
 
-TEST_P(ConfigDirPolicyProviderValueTest, NullValue) {
-  DictionaryValue dict;
-  dict.Set(GetParam().policy_key(), Value::CreateNullValue());
-  WriteConfigFile(dict, "empty");
-  ConfigDirPolicyProvider provider(GetChromePolicyDefinitionList(), test_dir());
-  PolicyMap policy_map;
-  EXPECT_TRUE(provider.Provide(&policy_map));
-  EXPECT_TRUE(policy_map.empty());
-}
-
 TEST_P(ConfigDirPolicyProviderValueTest, TestValue) {
   DictionaryValue dict;
   dict.Set(GetParam().policy_key(), GetParam().test_value()->DeepCopy());
   WriteConfigFile(dict, "policy");
   ConfigDirPolicyProvider provider(GetChromePolicyDefinitionList(), test_dir());
   PolicyMap policy_map;
   EXPECT_TRUE(provider.Provide(&policy_map));
   EXPECT_EQ(1U, policy_map.size());
   const Value* value = policy_map.Get(GetParam().type());
   ASSERT_TRUE(value);
@@ skipping 163 matching lines @@
 INSTANTIATE_TEST_CASE_P(
     ConfigDirPolicyProviderValueTestChromeOSInstance,
     ConfigDirPolicyProviderValueTest,
     testing::Values(
         ValueTestParams::ForIntegerPolicy(
             kPolicyPolicyRefreshRate,
             key::kPolicyRefreshRate)));
 #endif
 
 }  // namespace policy