Refactor FileBasedPolicyProvider, introduce AsynchronousPolicyProvider.

chrome/browser/policy/configuration_policy_provider_mac.h

 // Copyright (c) 2010 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.
 
 #ifndef CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PROVIDER_MAC_H_
 #define CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PROVIDER_MAC_H_
 #pragma once
 
 #include "base/scoped_ptr.h"
 #include "chrome/browser/policy/configuration_policy_store_interface.h"
 #include "chrome/browser/policy/file_based_policy_provider.h"
 #include "chrome/browser/preferences_mac.h"
 
 namespace policy {
 
-// A policy loader implementation that read Mac OS X's managed preferences.
-class MacPreferencesPolicyLoader : public FileBasedPolicyProvider::Delegate {
+// A provider delegate implementation that read Mac OS X's managed preferences.

[Mattias Nissler (ping if slow), 2010/12/06 10:26:20]

s/read/reads/

[danno, 2010/12/06 14:05:12]

Done.

+class MacPreferencesPolicyProviderDelegate
+    : public FileBasedPolicyProvider::ProviderDelegate {
  public:
   // Takes ownership of |preferences|.
-  MacPreferencesPolicyLoader(
+  MacPreferencesPolicyProviderDelegate(
       MacPreferences* preferences,
       const ConfigurationPolicyProvider::PolicyDefinitionList* policy_list);
 
   // FileBasedPolicyLoader::Delegate implementation.
   virtual DictionaryValue* Load();
   virtual base::Time GetLastModification();
 
  private:
   // In order to access the application preferences API, the names and values of
   // the policies that are recognized must be known to the loader.
   // Unfortunately, we cannot get the policy list at load time from the
   // provider, because the loader may outlive the provider, so we store our own
   // pointer to the list.
   const ConfigurationPolicyProvider::PolicyDefinitionList* policy_list_;
 
   scoped_ptr<MacPreferences> preferences_;
 
-  DISALLOW_COPY_AND_ASSIGN(MacPreferencesPolicyLoader);
+  DISALLOW_COPY_AND_ASSIGN(MacPreferencesPolicyProviderDelegate);
 };
 
 // An implementation of |ConfigurationPolicyProvider| using the mechanism
 // provided by Mac OS X's managed preferences.
 class ConfigurationPolicyProviderMac
     : public FileBasedPolicyProvider {
  public:
   explicit ConfigurationPolicyProviderMac(
       const ConfigurationPolicyProvider::PolicyDefinitionList* policy_list);
   // For testing; takes ownership of |preferences|.
   ConfigurationPolicyProviderMac(
       const ConfigurationPolicyProvider::PolicyDefinitionList* policy_list,
       MacPreferences* preferences);
 
   DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyProviderMac);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PROVIDER_MAC_H_