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

chrome/browser/policy/file_selection_dialogs_policy_handler_unittest.cc

Index: chrome/browser/policy/file_selection_dialogs_policy_handler_unittest.cc
diff --git a/chrome/browser/policy/file_selection_dialogs_policy_handler_unittest.cc b/chrome/browser/policy/file_selection_dialogs_policy_handler_unittest.cc
index 8392ff94dc8ce3e95c997bb79ab671d100ea8ef6..f743751a3477afd8e79bb331bc85da1a5e723ed9 100644
--- a/chrome/browser/policy/file_selection_dialogs_policy_handler_unittest.cc
+++ b/chrome/browser/policy/file_selection_dialogs_policy_handler_unittest.cc
@@ -7,6 +7,7 @@
 #include "chrome/browser/policy/file_selection_dialogs_policy_handler.h"
 #include "chrome/common/pref_names.h"
 #include "components/policy/core/common/policy_map.h"
+#include "components/policy/core/common/policy_types.h"
 #include "policy/policy_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -30,6 +31,7 @@ TEST_F(FileSelectionDialogsPolicyTest, EnableFileSelectionDialogs) {
   policy_.Set(key::kAllowFileSelectionDialogs,
               POLICY_LEVEL_MANDATORY,
               POLICY_SCOPE_USER,
+              POLICY_SOURCE_CLOUD,
               new base::FundamentalValue(true),
               NULL);
   handler_.ApplyPolicySettings(policy_, &prefs_);
@@ -43,6 +45,7 @@ TEST_F(FileSelectionDialogsPolicyTest, DisableFileSelectionDialogs) {
   policy_.Set(key::kAllowFileSelectionDialogs,
               POLICY_LEVEL_MANDATORY,
               POLICY_SCOPE_USER,
+              POLICY_SOURCE_CLOUD,
               new base::FundamentalValue(false),
               NULL);
   handler_.ApplyPolicySettings(policy_, &prefs_);