Updated new translate UI bubble text.

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 9664 matching lines @@
           <message name="IDS_TRANSLATE_BUBBLE_PAGE_LANGUAGE" desc="In Title Case: Text to show for the translate bubble label next to the combobox of the page language">
             Page Language:
           </message>
           <message name="IDS_TRANSLATE_BUBBLE_TRANSLATION_LANGUAGE" desc="In Title Case: Text to show for the translate bubble label next to the combobox of the target language for Translate">
             Translation Language:
           </message>
           <message name="IDS_TRANSLATE_BUBBLE_LANGUAGE_SETTINGS" desc="In Title Case: Text to show for the translate bubble link label next to jump to the language setting page.">
             Language Settings
           </message>
         </if>
+        <message name="IDS_TRANSLATE_BUBBLE_UNKNOWN_LANGUAGE" desc="Text to show for the translate bubble link label when the page source language cannot be determined. Used in place of a language name, so should be capitalized as such (e.g. &quot;Unknown&quot; for English, &quot;sconosciuto&quot; for Italian)" meaning="Noun to use in place of a language name in part of a translate bubble message.">
+          Unknown
+        </message>
       </if>
 
       <!-- Web and message center notifications -->
       <message name="IDS_NOTIFICATION_PERMISSIONS" desc="Text requesting permission for Web Notifications.">
         <ph name="site">$1<ex>mail.google.com</ex></ph> wants to send you notifications.
       </message>
       <message name="IDS_NOTIFICATION_PERMISSIONS_FRAGMENT" desc="Permission sentence fragment to show following the prompt 'This site wants to:' in a permissions request">
         Show notifications
       </message>
       <message name="IDS_NOTIFICATION_WELCOME_BODY" desc="Notification body for the Welcome Notification">
@@ skipping 2479 matching lines @@
       Your downloads appear here
     </message>
 
     <!-- Automation info bar -->
     <message name="IDS_CONTROLLED_BY_AUTOMATION" desc="Message shown when the browser session is being controlled by an automated test.">
       Chrome is being controlled by automated test software.
     </message>
   </messages>
  </release>
 </grit>