Refactored ConfigurationPolicyProvider to provide PolicyBundles instead of PolicyMaps.

chrome/browser/policy/policy_service_stub.cc

 // Copyright (c) 2012 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/policy_service_stub.h"
 
 #include "base/message_loop.h"
 
 namespace policy {
 
 PolicyServiceStub::PolicyServiceStub() {}
 
 PolicyServiceStub::~PolicyServiceStub() {}
 
 void PolicyServiceStub::AddObserver(PolicyDomain domain,
                                     const std::string& component_id,
                                     Observer* observer) {}
 
 void PolicyServiceStub::RemoveObserver(PolicyDomain domain,
                                        const std::string& component_id,
                                        Observer* observer) {}
 
-const PolicyMap* PolicyServiceStub::GetPolicies(
+const PolicyMap& PolicyServiceStub::GetPolicies(
     PolicyDomain domain,
     const std::string& component_id) const {
-  return NULL;
+  return kEmpty_;
 };
 
 bool PolicyServiceStub::IsInitializationComplete() const {
   return true;
 }
 
 void PolicyServiceStub::RefreshPolicies(const base::Closure& callback) {
   if (!callback.is_null())
     callback.Run();
 }
 
 }  // namespace policy