DevSite locale var update for hl url param.

Change-Id: I083009804d08246ffce4d4fe87fa9906ba5aaccc
diff --git a/tools/droiddoc/templates-sdk-dev/assets/js/docs.js b/tools/droiddoc/templates-sdk-dev/assets/js/docs.js
index 44a3110..c634a3b 100644
--- a/tools/droiddoc/templates-sdk-dev/assets/js/docs.js
+++ b/tools/droiddoc/templates-sdk-dev/assets/js/docs.js
@@ -3370,7 +3370,7 @@
    * Current locale.
    */
   var locale = (function() {
-    var lang = window.readCookie('pref_lang');
+    var lang = window.devsite ? window.devsiteLang : window.readCookie('pref_lang');
     if (lang === 0 || LANGUAGES.indexOf(lang) === -1) {
       lang = 'en';
     }