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

chrome/browser/prefs/scoped_user_pref_update.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.
 //
 // A helper class that assists preferences in firing notifications when lists
 // or dictionaries are changed.
 
 #ifndef CHROME_BROWSER_PREFS_SCOPED_USER_PREF_UPDATE_H_
 #define CHROME_BROWSER_PREFS_SCOPED_USER_PREF_UPDATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/prefs/pref_service.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/values.h"
-#include "chrome/browser/prefs/pref_service.h"
 
 class PrefService;
 
 namespace base {
 class DictionaryValue;
 class ListValue;
 }
 
 namespace subtle {
 
@@ skipping 69 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ScopedUserPrefUpdate);
 };
 
 typedef ScopedUserPrefUpdate<base::DictionaryValue, Value::TYPE_DICTIONARY>
     DictionaryPrefUpdate;
 typedef ScopedUserPrefUpdate<base::ListValue, Value::TYPE_LIST> ListPrefUpdate;
 
 #endif  // CHROME_BROWSER_PREFS_SCOPED_USER_PREF_UPDATE_H_