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

components/policy/core/common/cloud/component_cloud_policy_service_unittest.cc

 // Copyright (c) 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 "components/policy/core/common/cloud/component_cloud_policy_service.h"
 
 #include <map>
 #include <string>
 
 #include "base/callback.h"
@@ skipping 111 matching lines @@
 
     builder_.policy_data().set_policy_type(
         dm_protocol::kChromeExtensionPolicyType);
     builder_.policy_data().set_settings_entity_id(kTestExtension);
     builder_.payload().set_download_url(kTestDownload);
     builder_.payload().set_secure_hash(crypto::SHA256HashString(kTestPolicy));
 
     expected_policy_.Set("Name",
                          POLICY_LEVEL_MANDATORY,
                          POLICY_SCOPE_USER,
+                         POLICY_SOURCE_CLOUD,
                          new base::StringValue("disabled"),
                          nullptr);
     expected_policy_.Set("Second",
                          POLICY_LEVEL_RECOMMENDED,
                          POLICY_SCOPE_USER,
+                         POLICY_SOURCE_CLOUD,
                          new base::StringValue("maybe"),
                          nullptr);
   }
 
   void TearDown() override {
     // The service cleans up its backend on the background thread.
     service_.reset();
     RunUntilIdle();
   }
 
@@ skipping 360 matching lines @@
   // The initial, cached policy will be served once the backend is initialized.
   EXPECT_CALL(delegate_, OnComponentCloudPolicyUpdated());
   Connect();
   Mock::VerifyAndClearExpectations(&delegate_);
 
   PolicyBundle expected_bundle;
   const PolicyNamespace ns(POLICY_DOMAIN_EXTENSIONS, kTestExtension);
   expected_bundle.Get(ns).Set("Name",
                               POLICY_LEVEL_MANDATORY,
                               POLICY_SCOPE_USER,
+                              POLICY_SOURCE_CLOUD,
                               new base::StringValue("published"),
                               nullptr);
   EXPECT_TRUE(service_->policy().Equals(expected_bundle));
 }
 
 TEST_F(ComponentCloudPolicyServiceTest, PurgeWhenServerRemovesPolicy) {
   // Initialize with cached policy.
   PopulateCache();
   Connect();
 
@@ skipping 45 matching lines @@
   EXPECT_TRUE(ContainsKey(contents, kTestExtension));
   EXPECT_FALSE(ContainsKey(contents, kTestExtension2));
 
   // And the service isn't publishing policy for the second extension anymore.
   expected_bundle.Clear();
   expected_bundle.Get(ns).CopyFrom(expected_policy_);
   EXPECT_TRUE(service_->policy().Equals(expected_bundle));
 }
 
 }  // namespace policy