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

chrome/browser/profiles/incognito_mode_policy_handler_unittest.cc

Index: chrome/browser/profiles/incognito_mode_policy_handler_unittest.cc
diff --git a/chrome/browser/profiles/incognito_mode_policy_handler_unittest.cc b/chrome/browser/profiles/incognito_mode_policy_handler_unittest.cc
index 5fac6d6fd25326e2bbdbd90b8f6fc3c3009fb474..f68d61805d54ff68c2b41755cef98d9f47ede9bc 100644
--- a/chrome/browser/profiles/incognito_mode_policy_handler_unittest.cc
+++ b/chrome/browser/profiles/incognito_mode_policy_handler_unittest.cc
@@ -7,6 +7,7 @@
 #include "chrome/common/pref_names.h"
 #include "components/policy/core/browser/configuration_policy_pref_store.h"
 #include "components/policy/core/browser/configuration_policy_pref_store_test.h"
+#include "components/policy/core/common/policy_types.h"
 #include "policy/policy_constants.h"
 
 namespace policy {
@@ -35,6 +36,7 @@ class IncognitoModePolicyHandlerTest
       policy.Set(key::kIncognitoEnabled,
                  POLICY_LEVEL_MANDATORY,
                  POLICY_SCOPE_USER,
+                 POLICY_SOURCE_CLOUD,
                  new base::FundamentalValue(incognito_enabled ==
                                             INCOGNITO_ENABLED_TRUE),
                  NULL);
@@ -43,6 +45,7 @@ class IncognitoModePolicyHandlerTest
       policy.Set(key::kIncognitoModeAvailability,
                  POLICY_LEVEL_MANDATORY,
                  POLICY_SCOPE_USER,
+                 POLICY_SOURCE_CLOUD,
                  new base::FundamentalValue(availability),
                  NULL);
     }