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

chrome/browser/chromeos/policy/cloud_external_data_policy_observer_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 "chrome/browser/chromeos/policy/cloud_external_data_policy_observer.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/files/file_path.h"
@@ skipping 336 matching lines @@
 }
 
 void CloudExternalDataPolicyObserverTest::SetRegularUserAvatarPolicy(
     const std::string& value) {
   PolicyMap policy_map;
   if (!value.empty()) {
     policy_map.Set(
         key::kUserAvatarImage,
         POLICY_LEVEL_MANDATORY,
         POLICY_SCOPE_USER,
+        POLICY_SOURCE_CLOUD,
         new base::StringValue(value),
         external_data_manager_.CreateExternalDataFetcher(
             key::kUserAvatarImage).release());
   }
   user_policy_provider_.UpdateChromePolicy(policy_map);
 }
 
 void CloudExternalDataPolicyObserverTest::LogInAsRegularUser() {
   user_manager_->AddUser(kRegularUserID);
 
@@ skipping 582 matching lines @@
 
   EXPECT_TRUE(set_calls_.empty());
   EXPECT_TRUE(cleared_calls_.empty());
   ASSERT_EQ(1u, fetched_calls_.size());
   EXPECT_EQ(kRegularUserID, fetched_calls_.front().first);
   EXPECT_EQ(avatar_policy_2_data_, fetched_calls_.front().second);
   ClearObservations();
 }
 
 }  // namespace policy