extensions: Relocate pref name constants.

chrome/browser/extensions/external_policy_loader.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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTERNAL_POLICY_LOADER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_POLICY_LOADER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "chrome/browser/extensions/external_loader.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class Profile;
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace extensions {
 
 // A specialization of the ExternalProvider that uses
-// prefs::kExtensionInstallForceList to look up which external extensions are
+// pref_names::kInstallForceList to look up which external extensions are
 // registered.
 class ExternalPolicyLoader
     : public ExternalLoader,
       public content::NotificationObserver {
  public:
   explicit ExternalPolicyLoader(Profile* profile);
 
   // content::NotificationObserver implementation
   virtual void Observe(int type,
                        const content::NotificationSource& source,
@@ skipping 16 matching lines @@
   content::NotificationRegistrar notification_registrar_;
 
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalPolicyLoader);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_POLICY_LOADER_H_