base/prefs: Remove the public/ directory and move the files to //base/prefs.

base/prefs/pref_change_registrar.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 BASE_PREFS_PUBLIC_PREF_CHANGE_REGISTRAR_H_
-#define BASE_PREFS_PUBLIC_PREF_CHANGE_REGISTRAR_H_
+#ifndef BASE_PREFS_PREF_CHANGE_REGISTRAR_H_
+#define BASE_PREFS_PREF_CHANGE_REGISTRAR_H_
 
 #include <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/prefs/base_prefs_export.h"
 #include "base/prefs/pref_observer.h"
 
 class PrefService;
@@ skipping 53 matching lines @@
                                     const std::string& pref_name);
 
   typedef std::map<std::string, NamedChangeCallback> ObserverMap;
 
   ObserverMap observers_;
   PrefService* service_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefChangeRegistrar);
 };
 
-#endif  // BASE_PREFS_PUBLIC_PREF_CHANGE_REGISTRAR_H_
+#endif  // BASE_PREFS_PREF_CHANGE_REGISTRAR_H_