Add source column to chrome://policy showing the origins of policies.

chrome/browser/extensions/extension_management_test_util.cc

 // Copyright 2014 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/browser/extensions/extension_management_test_util.h"
 
 #include <string>
 
 #include "components/crx_file/id_util.h"
 #include "components/policy/core/common/configuration_policy_provider.h"
@@ skipping 245 matching lines @@
   if (policy_value && policy_value->GetAsDictionary(&dict_value))
     SetPref(dict_value->DeepCopy());
   else
     SetPref(new base::DictionaryValue);
 }
 
 ExtensionManagementPolicyUpdater::~ExtensionManagementPolicyUpdater() {
   policies_->Get(policy::PolicyNamespace(policy::POLICY_DOMAIN_CHROME,
                                          std::string()))
       .Set(policy::key::kExtensionSettings, policy::POLICY_LEVEL_MANDATORY,
-           policy::POLICY_SCOPE_USER, TakePref().release(), nullptr);
+           policy::POLICY_SCOPE_USER, policy::POLICY_SOURCE_CLOUD,
+           TakePref().release(), nullptr);
   provider_->UpdatePolicy(policies_.Pass());
 }
 
 }  // namespace extensions