Create additional PrefStore for Device Management policy.

chrome/browser/prefs/pref_notifier.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_PREFS_PREF_NOTIFIER_H_
 #define CHROME_BROWSER_PREFS_PREF_NOTIFIER_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/hash_tables.h"
 #include "base/non_thread_safe.h"
 #include "base/observer_list.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
 
 class NotificationObserver;
 class PrefService;
 class PrefValueStore;
 class Value;
 
 // Registers observers for particular preferences and sends notifications when
 // preference values or sources (i.e., which preference layer controls the
 // preference) change.
 class PrefNotifier : public NonThreadSafe,
                      public NotificationObserver {
  public:
   // PrefStores must be listed here in order from highest to lowest priority.
-  //   MANAGED contains all managed (policy) preference values.
+  //   MANAGED_PLATFORM contains all managed preference values that are
+  //       provided by a platform-specific policy mechanism (e.g. Windows
+  //       Group Policy).
+  //   DEVICE_MANAGEMENT contains all managed preference values supplied
+  //       by the device management server (cloud policy).
   //   EXTENSION contains preference values set by extensions.
   //   COMMAND_LINE contains preference values set by command-line switches.
   //   USER contains all user-set preference values.
   //   RECOMMENDED contains all recommended (policy) preference values.
   //   DEFAULT contains all application default preference values.
   // This enum is kept in pref_notifier.h rather than pref_value_store.h in
   // order to minimize additional headers needed by the *PrefStore files.
   enum PrefStoreType {
     // INVALID_STORE is not associated with an actual PrefStore but used as
     // an invalid marker, e.g. as a return value.
     INVALID_STORE = -1,
-    MANAGED_STORE = 0,
+    MANAGED_PLATFORM_STORE = 0,
+    DEVICE_MANAGEMENT_STORE,
     EXTENSION_STORE,
     COMMAND_LINE_STORE,
     USER_STORE,
     RECOMMENDED_STORE,
     DEFAULT_STORE,
     PREF_STORE_TYPE_MAX = DEFAULT_STORE
   };
 
   // The |service| with which this notifier is associated will be sent as the
   // source of any notifications.
@@ skipping 51 matching lines @@
 
   // NotificationObserver methods:
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   DISALLOW_COPY_AND_ASSIGN(PrefNotifier);
 };
 
 #endif  // CHROME_BROWSER_PREFS_PREF_NOTIFIER_H_