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

chrome/browser/policy/file_selection_dialogs_policy_handler_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/prefs/pref_value_map.h"
 #include "base/values.h"
 #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"
 
 namespace policy {
 
 // Test cases for how the AllowFileSelectionDialogs policy influences the
 // PromptForDownload preference.
 class FileSelectionDialogsPolicyTest : public testing::Test {
  protected:
   PolicyMap policy_;
   FileSelectionDialogsPolicyHandler handler_;
   PrefValueMap prefs_;
 };
 
 TEST_F(FileSelectionDialogsPolicyTest, Default) {
   handler_.ApplyPolicySettings(policy_, &prefs_);
   EXPECT_FALSE(prefs_.GetValue(prefs::kPromptForDownload, NULL));
 }
 
 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_);
 
   // Allowing file-selection dialogs should not influence the PromptForDownload
   // pref.
   EXPECT_FALSE(prefs_.GetValue(prefs::kPromptForDownload, NULL));
 }
 
 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_);
 
   // Disabling file-selection dialogs should disable the PromptForDownload pref.
   const base::Value* value = NULL;
   EXPECT_TRUE(prefs_.GetValue(prefs::kPromptForDownload, &value));
   ASSERT_TRUE(value);
   bool prompt_for_download = true;
   bool result = value->GetAsBoolean(&prompt_for_download);
   EXPECT_TRUE(result);
   EXPECT_FALSE(prompt_for_download);
 }
 
 }  // namespace policy