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

components/policy/core/common/proxy_policy_provider_unittest.cc

Index: components/policy/core/common/proxy_policy_provider_unittest.cc
diff --git a/components/policy/core/common/proxy_policy_provider_unittest.cc b/components/policy/core/common/proxy_policy_provider_unittest.cc
index 09c5da9f6b9ba19f368a79ddc03d22d368e4f197..9ba913080d400489b1b66b4cc0bb78a1298e0d5c 100644
--- a/components/policy/core/common/proxy_policy_provider_unittest.cc
+++ b/components/policy/core/common/proxy_policy_provider_unittest.cc
@@ -6,6 +6,7 @@
 #include "base/callback.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/proxy_policy_provider.h"
 #include "components/policy/core/common/schema_registry.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ -55,6 +56,7 @@ TEST_F(ProxyPolicyProviderTest, Delegate) {
       .Set("policy",
            POLICY_LEVEL_MANDATORY,
            POLICY_SCOPE_USER,
+           POLICY_SOURCE_CLOUD,
            new base::StringValue("value"),
            NULL);
   mock_provider_.UpdatePolicy(CopyBundle(bundle));
@@ -69,6 +71,7 @@ TEST_F(ProxyPolicyProviderTest, Delegate) {
       .Set("policy",
            POLICY_LEVEL_MANDATORY,
            POLICY_SCOPE_USER,
+           POLICY_SOURCE_CLOUD,
            new base::StringValue("new value"),
            NULL);
   mock_provider_.UpdatePolicy(CopyBundle(bundle));