Revert of Delete base/prefs and update callers to use components.

components/prefs/pref_service.h

 // 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.
 
 // This provides a way to access the application's current preferences.
 
 // Chromium settings and storage represent user-selected preferences and
 // information and MUST not be extracted, overwritten or modified except
 // through Chromium defined APIs.
 
-#ifndef COMPONENTS_PREFS_PREF_SERVICE_H_
-#define COMPONENTS_PREFS_PREF_SERVICE_H_
+#ifndef BASE_PREFS_PREF_SERVICE_H_
+#define BASE_PREFS_PREF_SERVICE_H_
 
 #include <stdint.h>
 
 #include <set>
 #include <string>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
@@ skipping 21 matching lines @@
 class ScopedUserPrefUpdateBase;
 }
 
 // Base class for PrefServices. You can use the base class to read and
 // interact with preferences, but not to register new preferences; for
 // that see e.g. PrefRegistrySimple.
 //
 // Settings and storage accessed through this class represent
 // user-selected preferences and information and MUST not be
 // extracted, overwritten or modified except through the defined APIs.
-class COMPONENTS_PREFS_EXPORT PrefService : public base::NonThreadSafe {
+class BASE_PREFS_EXPORT PrefService : public base::NonThreadSafe {
  public:
   enum PrefInitializationStatus {
     INITIALIZATION_STATUS_WAITING,
     INITIALIZATION_STATUS_SUCCESS,
     INITIALIZATION_STATUS_CREATED_NEW_PREF_STORE,
     INITIALIZATION_STATUS_ERROR
   };
 
   // A helper class to store all the information associated with a preference.
-  class COMPONENTS_PREFS_EXPORT Preference {
+  class BASE_PREFS_EXPORT Preference {
    public:
     // The type of the preference is determined by the type with which it is
     // registered. This type needs to be a boolean, integer, double, string,
     // dictionary (a branch), or list.  You shouldn't need to construct this on
     // your own; use the PrefService::Register*Pref methods instead.
     Preference(const PrefService* service,
                const std::string& name,
                base::Value::Type type);
     ~Preference() {}
 
@@ skipping 300 matching lines @@
   const base::Value* GetPreferenceValue(const std::string& path) const;
 
   // Local cache of registered Preference objects. The pref_registry_
   // is authoritative with respect to what the types and default values
   // of registered preferences are.
   mutable PreferenceMap prefs_map_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefService);
 };
 
-#endif  // COMPONENTS_PREFS_PREF_SERVICE_H_
+#endif  // BASE_PREFS_PREF_SERVICE_H_