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

components/policy/core/common/policy_loader_win_unittest.cc

Index: components/policy/core/common/policy_loader_win_unittest.cc
diff --git a/components/policy/core/common/policy_loader_win_unittest.cc b/components/policy/core/common/policy_loader_win_unittest.cc
index c0afc4ecf33f6cd65ab662ff7c43f073bd434d35..67ba9b33d27d74cdf868785204806fe50a7a68b0 100644
--- a/components/policy/core/common/policy_loader_win_unittest.cc
+++ b/components/policy/core/common/policy_loader_win_unittest.cc
@@ -34,6 +34,7 @@
 #include "components/policy/core/common/external_data_fetcher.h"
 #include "components/policy/core/common/policy_bundle.h"
 #include "components/policy/core/common/policy_map.h"
+#include "components/policy/core/common/policy_types.h"
 #include "components/policy/core/common/preg_parser_win.h"
 #include "components/policy/core/common/schema_map.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -333,7 +334,10 @@ void ScopedGroupPolicyRegistrySandbox::DeleteKeys() {
 }
 
 RegistryTestHarness::RegistryTestHarness(HKEY hive, PolicyScope scope)
-    : PolicyProviderTestHarness(POLICY_LEVEL_MANDATORY, scope), hive_(hive) {}
+    : PolicyProviderTestHarness(POLICY_LEVEL_MANDATORY, scope,
+                                POLICY_SOURCE_PLATFORM),
+      hive_(hive) {
+}
 
 RegistryTestHarness::~RegistryTestHarness() {}
 
@@ -455,7 +459,9 @@ PolicyProviderTestHarness* RegistryTestHarness::CreateHKLM() {
 }
 
 PRegTestHarness::PRegTestHarness()
-    : PolicyProviderTestHarness(POLICY_LEVEL_MANDATORY, POLICY_SCOPE_MACHINE) {}
+    : PolicyProviderTestHarness(POLICY_LEVEL_MANDATORY, POLICY_SCOPE_MACHINE,
+                                POLICY_SOURCE_PLATFORM) {
+}
 
 PRegTestHarness::~PRegTestHarness() {}