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

components/policy/core/common/cloud/user_cloud_policy_manager_unittest.cc

Index: components/policy/core/common/cloud/user_cloud_policy_manager_unittest.cc
diff --git a/components/policy/core/common/cloud/user_cloud_policy_manager_unittest.cc b/components/policy/core/common/cloud/user_cloud_policy_manager_unittest.cc
index ee6cdec43c12c4fc69e22cdb573b35ffd85a44db..158971ee11255e3e6e535e02427de39640932028 100644
--- a/components/policy/core/common/cloud/user_cloud_policy_manager_unittest.cc
+++ b/components/policy/core/common/cloud/user_cloud_policy_manager_unittest.cc
@@ -11,6 +11,7 @@
 #include "components/policy/core/common/cloud/mock_user_cloud_policy_store.h"
 #include "components/policy/core/common/external_data_fetcher.h"
 #include "components/policy/core/common/mock_configuration_policy_provider.h"
+#include "components/policy/core/common/policy_types.h"
 #include "components/policy/core/common/schema_registry.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ -35,8 +36,9 @@ class UserCloudPolicyManagerTest : public testing::Test {
     policy_map_.Set("key",
                     POLICY_LEVEL_MANDATORY,
                     POLICY_SCOPE_USER,
+                    POLICY_SOURCE_CLOUD,
                     new base::StringValue("value"),
-                    NULL);
+                    nullptr);

[bartfab (slow), 2015/09/16 15:58:41]

Nit: You did not touch this line other than s/NULL/nullptr/ :).

[fhorschig, 2015/09/17 11:20:41]

Done.

     expected_bundle_.Get(PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()))
         .CopyFrom(policy_map_);
   }