Language.{h,cpp} clean-up.

Source/web/resources/calendarPicker.js

 "use strict";
 /*
  * Copyright (C) 2012 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.
@@ skipping 31 matching lines @@
     Friday: 5,
     Saturday: 6
 };
 
 /**
  * @type {Object}
  */
 var global = {
     picker: null,
     params: {
-        locale: "en_US",
+        locale: "en-US",
         weekStartDay: WeekDay.Sunday,
         dayLabels: ["S", "M", "T", "W", "T", "F", "S"],
         shortMonthLabels: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec"],
         isLocaleRTL: false,
         mode: "date",
         weekLabel: "Week",
         anchorRectInScreen: new Rectangle(0, 0, 0, 0),
         currentValue: null
     }
 };
 
 // ----------------------------------------------------------------
 // Utility functions
 
 /**
  * @return {!boolean}
  */
 function hasInaccuratePointingDevice() {
     return matchMedia("(pointer: coarse)").matches;
 }
 
 /**
  * @return {!string} lowercase locale name. e.g. "en-us"
  */
 function getLocale() {
-    return (global.params.locale || "en-us").toLowerCase().replace(/_/g, '-');
+    return global.params.locale || "en-us";
 }
 
 /**
  * @return {!string} lowercase language code. e.g. "en"
  */
 function getLanguage() {
     var locale = getLocale();
     var result = locale.match(/^([a-z]+)/);
     if (!result)
         return "en";
@@ skipping 4012 matching lines @@
         event.stopPropagation();
         event.preventDefault();
     }
 };
 
 if (window.dialogArguments) {
     initialize(dialogArguments);
 } else {
     window.addEventListener("message", handleMessage, false);
 }