Move remaining non-test, non-Chrome-specific Prefs code to base/prefs/.

base/prefs/pref_notifier_impl.h

 // Copyright (c) 2011 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_IMPL_H_
-#define CHROME_BROWSER_PREFS_PREF_NOTIFIER_IMPL_H_
+#ifndef BASE_PREFS_PREF_NOTIFIER_IMPL_H_
+#define BASE_PREFS_PREF_NOTIFIER_IMPL_H_
 
 #include <list>
 #include <string>
 
 #include "base/callback.h"
+#include "base/compiler_specific.h"
 #include "base/hash_tables.h"
 #include "base/observer_list.h"
+#include "base/prefs/base_prefs_export.h"
 #include "base/prefs/pref_notifier.h"
 #include "base/prefs/pref_observer.h"
 #include "base/threading/non_thread_safe.h"
 
 class PrefService;
 
 // The PrefNotifier implementation used by the PrefService.
-class PrefNotifierImpl : public PrefNotifier,
-                         public base::NonThreadSafe {
+class BASE_PREFS_EXPORT PrefNotifierImpl
+    : public NON_EXPORTED_BASE(PrefNotifier),
+      public base::NonThreadSafe {
  public:
   PrefNotifierImpl();
   explicit PrefNotifierImpl(PrefService* pref_service);
   virtual ~PrefNotifierImpl();
 
   // If the pref at the given path changes, we call the observer's
   // OnPreferenceChanged method.
   void AddPrefObserver(const char* path, PrefObserver* observer);
   void RemovePrefObserver(const char* path, PrefObserver* observer);
 
@@ skipping 26 matching lines @@
 
   // Weak reference; the notifier is owned by the PrefService.
   PrefService* pref_service_;
 
   PrefObserverMap pref_observers_;
   PrefInitObserverList init_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefNotifierImpl);
 };
 
-#endif  // CHROME_BROWSER_PREFS_PREF_NOTIFIER_IMPL_H_
+#endif  // BASE_PREFS_PREF_NOTIFIER_IMPL_H_