Add identifier for the localized text of a menulist

public/platform/WebLocalizedString.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 106 matching lines @@
         PlaceholderForMonthField,
         // PlaceholderForYearField is for year placeholder text, e.g. "yyyy",
         // for year field used in multiple fields "date", "datetime", and
         // "datetime-local" input UI instead of "----".
         PlaceholderForYearField,
         ResetButtonDefaultLabel,
         SearchableIndexIntroduction,
         SearchMenuClearRecentSearchesText, // Deprecated.
         SearchMenuNoRecentSearchesText, // Deprecated.
         SearchMenuRecentSearchesText, // Deprecated.
+        SelectMenuListText,
         SubmitButtonDefaultLabel,
         ThisMonthButtonLabel,
         ThisWeekButtonLabel,
         ValidationBadInputForNumber,
         ValidationBadInputForDateTime,
         ValidationPatternMismatch,
         ValidationRangeOverflow,
         ValidationRangeOverflowDateTime,
         ValidationRangeUnderflow,
         ValidationRangeUnderflowDateTime,
@@ skipping 18 matching lines @@
         ValidationValueMissingForRadio,
         ValidationValueMissingForSelect,
         WeekFormatTemplate,
         WeekNumberLabel,
     };
 };
 
 } // namespace blink
 
 #endif