extensions: Relocate pref name constants.

chrome/browser/extensions/api/preference/preference_api.cc

 // 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.
 
 #include "chrome/browser/extensions/api/preference/preference_api.h"
 
 #include <map>
 #include <utility>
 
 #include "base/lazy_instance.h"
@@ skipping 408 matching lines @@
     ExtensionPrefs* prefs,
     ExtensionPrefValueMap* value_map,
     const std::string& extension_id,
     ExtensionPrefsScope scope) {
   std::string scope_string;
   if (!pref_names::ScopeToPrefName(scope, &scope_string))
     return;
   std::string key = extension_id + "." + scope_string;
 
   const base::DictionaryValue* source_dict = prefs->pref_service()->
-      GetDictionary(prefs::kExtensionsPref);
+      GetDictionary(pref_names::kExtensions);
   const base::DictionaryValue* preferences = NULL;
   if (!source_dict->GetDictionary(key, &preferences))
     return;
 
   for (base::DictionaryValue::Iterator iter(*preferences);
        !iter.IsAtEnd(); iter.Advance()) {
     value_map->SetExtensionPref(
         extension_id, iter.key(), scope, iter.value().DeepCopy());
   }
 }
@@ skipping 289 matching lines @@
   std::string browser_pref;
   if (!ValidateBrowserPref(pref_key, &browser_pref))
     return false;
 
   PreferenceAPI::Get(GetProfile())
       ->RemoveExtensionControlledPref(extension_id(), browser_pref, scope);
   return true;
 }
 
 }  // namespace extensions