Implements the dialog view for logout button tray in public sessions.

chrome/browser/ui/ash/chrome_launcher_prefs.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/ui/ash/chrome_launcher_prefs.h"
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "chrome/common/extensions/extension_constants.h"
@@ skipping 65 matching lines @@
                                kShelfAlignmentBottom,
                                user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterStringPref(
       prefs::kShelfAlignmentLocal,
       std::string(),
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterBooleanPref(
       prefs::kShowLogoutButtonInTray,
       false,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterIntegerPref(
+      prefs::kLogoutDialogDurationMs,
+      20000,
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterDictionaryPref(
       prefs::kShelfPreferences,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 
 base::DictionaryValue* CreateAppDict(const std::string& app_id) {
   scoped_ptr<base::DictionaryValue> app_value(new base::DictionaryValue);
   app_value->SetString(kPinnedAppsPrefAppIDPath, app_id);
   return app_value.release();
 }
 
 }  // namespace ash