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

components/policy/core/common/generate_policy_source_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 <cstring>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "build/build_config.h"
@@ skipping 202 matching lines @@
 
   const base::Value* multiprof_behavior =
       policy_map.GetValue(key::kChromeOsMultiProfileUserBehavior);
   base::StringValue expected("primary-only");
   EXPECT_TRUE(expected.Equals(multiprof_behavior));
 
   // If policy already configured, it's not changed to enterprise defaults.
   policy_map.Set(key::kChromeOsMultiProfileUserBehavior,
                  POLICY_LEVEL_MANDATORY,
                  POLICY_SCOPE_USER,
+                 POLICY_SOURCE_CLOUD,
                  new base::StringValue("test_value"),
                  NULL);
   SetEnterpriseUsersDefaults(&policy_map);
   multiprof_behavior =
       policy_map.GetValue(key::kChromeOsMultiProfileUserBehavior);
   expected = base::StringValue("test_value");
   EXPECT_TRUE(expected.Equals(multiprof_behavior));
 }
 #endif
 
 }  // namespace policy