policy: Add ostream operator overloads to policy types for testing.

chrome/browser/policy/test_utils.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 "chrome/browser/policy/test_utils.h"
-
-#include <string>
-
-#include "base/logging.h"
-#include "base/values.h"
-#include "chrome/browser/policy/policy_map.h"
-#include "chrome/browser/policy/policy_service.h"
-
-namespace policy {
-
-bool PolicyServiceIsEmpty(const PolicyService* service) {
-  const PolicyMap& map = service->GetPolicies(
-      PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()));
-  if (!map.empty()) {
-    base::DictionaryValue dict;
-    for (PolicyMap::const_iterator it = map.begin(); it != map.end(); ++it)
-      dict.SetWithoutPathExpansion(it->first, it->second.value->DeepCopy());
-    LOG(WARNING) << "There are pre-existing policies in this machine: " << dict;
-  }
-  return map.empty();
-}
-
-}  // namespace policy